CN105642110A - Catalysis component, method for preparing catalysis component, and air conditioning equipment - Google Patents
Catalysis component, method for preparing catalysis component, and air conditioning equipment Download PDFInfo
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- CN105642110A CN105642110A CN201610052834.6A CN201610052834A CN105642110A CN 105642110 A CN105642110 A CN 105642110A CN 201610052834 A CN201610052834 A CN 201610052834A CN 105642110 A CN105642110 A CN 105642110A
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- carrier
- catalytic module
- oxide layer
- metal oxide
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000004378 air conditioning Methods 0.000 title claims abstract description 23
- 238000006555 catalytic reaction Methods 0.000 title abstract description 12
- 239000002243 precursor Substances 0.000 claims abstract description 41
- 238000005507 spraying Methods 0.000 claims abstract description 41
- 238000000151 deposition Methods 0.000 claims abstract description 15
- 230000008021 deposition Effects 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 111
- 150000004706 metal oxides Chemical class 0.000 claims description 108
- 230000003197 catalytic effect Effects 0.000 claims description 98
- 239000007921 spray Substances 0.000 claims description 42
- 229910000510 noble metal Inorganic materials 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 36
- 238000010438 heat treatment Methods 0.000 claims description 31
- 230000008569 process Effects 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 14
- 239000012159 carrier gas Substances 0.000 claims description 10
- 238000000889 atomisation Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 5
- 238000005137 deposition process Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 5
- 238000011068 loading method Methods 0.000 claims description 4
- 230000015556 catabolic process Effects 0.000 abstract description 27
- 238000006731 degradation reaction Methods 0.000 abstract description 27
- 238000007254 oxidation reaction Methods 0.000 abstract description 10
- 230000003647 oxidation Effects 0.000 abstract description 6
- 238000009776 industrial production Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract 2
- 239000010970 precious metal Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 35
- 239000000356 contaminant Substances 0.000 description 19
- 239000000919 ceramic Substances 0.000 description 15
- 239000000853 adhesive Substances 0.000 description 13
- 230000001070 adhesive effect Effects 0.000 description 13
- 229910000838 Al alloy Inorganic materials 0.000 description 12
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 description 11
- 230000009286 beneficial effect Effects 0.000 description 11
- 229910052878 cordierite Inorganic materials 0.000 description 11
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 11
- 238000013461 design Methods 0.000 description 9
- 238000009689 gas atomisation Methods 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- 238000011109 contamination Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 239000003599 detergent Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- -1 nitrogen Chemical class 0.000 description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910018487 Ni—Cr Inorganic materials 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000037237 body shape Effects 0.000 description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 4
- 229910052763 palladium Inorganic materials 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 238000012797 qualification Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical compound [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 3
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 3
- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(II,III) oxide Inorganic materials [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000002075 main ingredient Substances 0.000 description 3
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 2
- 229910003271 Ni-Fe Inorganic materials 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
- 229910018879 Pt—Pd Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 159000000013 aluminium salts Chemical class 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 2
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 150000002505 iron Chemical class 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 150000002696 manganese Chemical class 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L manganese oxide Inorganic materials [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 150000002815 nickel Chemical class 0.000 description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 150000002835 noble gases Chemical class 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
- B01J23/42—Platinum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/56—Platinum group metals
- B01J23/64—Platinum group metals with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/656—Manganese, technetium or rhenium
- B01J23/6562—Manganese
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/89—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with noble metals
- B01J23/8913—Cobalt and noble metals
-
- B01J35/60—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
Abstract
The invention provides a catalysis component, a method for preparing the catalysis component, and air conditioning equipment. The method for preparing the catalysis component comprises the steps of preheating, wherein a carrier is heated to a first preset temperature; spraying, wherein precursor solution is sprayed onto the surface of the heated carrier by means of the spraying technique, the first preset temperature is not lower than the oxidizing temperature of a precursor in the precursor solution, and a metal oxidation layer is formed on the surface of the carrier after the precursor of the precursor solution is oxidized; deposition, wherein precious metal is deposited on the metal oxidization layer. The method is simple and has great industrial production potential. The catalysis component prepared with the method has high degradation efficiency and excellent weather resistance, and the catalysis component and the air conditioning equipment provided with the catalysis component can be popularized easily in the field.
Description
Technical field
The present invention relates to apparatus of air conditioning field, in particular to a kind of catalytic module and preparation method thereof, and comprise the apparatus of air conditioning of this catalytic module.
Background technology
Along with the fast development of recent decades economy, the improving constantly of people's living standard, air pollution problem inside rooms is also more paid close attention to by people. existing known closing interior volume is with formaldehyde, ozone, benzene homologues (such as benzene,toluene,xylene) for main gaseous contaminant, and in current cleaning equipment, it is processed by main employing catalytic purification method, specifically, catalytic purification method is degraded to water and carbon dioxide by gaseous contaminant in catalyst surface generation catalytic reaction and reaches to remove the purpose of pollutant, the feature such as efficient, safe having due to the method and make it be widely used in the equipment such as air-conditioner, air purifier, such as, the catalysed partial of the catalytic module used in existing air-conditioner or depurator, its layer structure for being made up of many kinds of substance, and catalysed partial is generally compounded in such as electrical heating fin, on the carriers such as catalytic module, but, when air-conditioner or depurator run complex working condition, often with vibrations, air quantity changes, the phenomenons such as humiture change, for existing catalytic module, between carrier and catalysed partial, or thermal expansion coefficient difference between each Rotating fields in catalysed partial, these vibrations, air quantity changes, the phenomenons such as humiture change are easily caused catalysed partial and peel off from carrier, or separate between each layer of catalysed partial, the problems such as deformation, and for product that the existing mode being compounded on carrier by catalysed partial obtains, it is poor to the absorbability of gaseous contamination, so that the purification efficiency of product is also relative on the low side with detergent power, certainly, existing also have the mode being immersed on carrier by catalysed partial, but which cannot be processed targetedly and obtain the product that catalysed partial thickness is certain, which greatly increases the rework rate of process of producing product, and cause that the production efficiency of product reduces, it is unfavorable for that it promotes in production field.
Summary of the invention
In order to solve above-mentioned technical problem at least one, the preparation method that it is an object of the present invention to provide a kind of catalytic module, its production efficiency is high, and the degradation efficiency of prepared catalytic module is high, weatherability is strong.
A kind of catalytic module adopting said method to make of offer is provided.
Another purpose of the present invention is in that to provide a kind of apparatus of air conditioning with above-mentioned catalytic module.
For achieving the above object, the preparation method that the embodiment of first aspect present invention provides a kind of catalytic module, including: preheating step, by carrier heating to the first preset temperature; Spraying process, adopt spraying coating process to the surface spraying precursor liquid of described carrier after heating, wherein, described first preset temperature is not less than in described precursor liquid the oxidizing temperature of predecessor, and the predecessor of described precursor liquid oxidized after form metal oxide layer on the surface of described carrier; Deposition step, depositing noble metal on described metal oxide layer.
It is understood that above-mentioned first preset temperature should lower than the deformation temperature of carrier, to avoid vector form deforming.
The preparation method of the catalytic module that the embodiment of first aspect present invention provides, adopt spraying coating process to the surface spraying precursor liquid of carrier after heating, the heat on carrier is utilized to make the predecessor generation oxidation reaction in precursor liquid, and the metal-oxide generated is directly loaded in carrier surface, thus obtaining the load burning Rotating fields at carrier surface, process implementing process is simple, implementation cost is low for this, possesses good industrial production potential, for existing combination process and impregnation technology, in this method, the quantity for spray of predecessor is easily controllable, with this burning layer thickness being easy to control generation, thus improving the qualification rate of product, and predecessor aoxidizes at carrier surface in this method, and the process of metal-oxide molding is extremely rapid, this makes the efficiency preparing catalytic module be obviously improved, the metal oxide layer internal structure additionally obtained under this rapidly molding is more fluffy, which greatly improves the porosity of metal oxide layer microcosmic loose structure, thus can increase the noble metal effective depositional area on metal oxide layer on the one hand, it is beneficial to noble metal in metal oxide layer inner dispersion, thus improving the catalytic module degradation efficiency to gaseous contaminant, and the porosity improving loose structure can improve its absorbability to gaseous contamination accordingly herein, it is beneficial to gaseous contaminant uniformly spread in hole, catalytic module is can further improve under high wind speed to the detergent power of air-flow and degradation effect with this, metal oxide layer can be improved on the other hand at the infiltration of carrier inside and adhesive ability, thus improving metal oxide layer in carrier surface adhesive strength, thus can avoid the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from carrier surface, improve product weatherability, make it more reliable.
It addition, the preparation method of the catalytic module in above-described embodiment provided by the invention can also have following additional technical feature:
In technique scheme, in described spraying process, described spraying coating process is sprayed deposit technique.
When sprayed deposit technique utilizes spray gun to spray, including the precursor liquid of predecessor is atomized spray to carrier surface, the adequacy that predecessor contacts is can ensure that with oxygen on the one hand with this, thus ensureing its oxidation efficiency and oxidation adequacy, to improve the shaping speed of metal oxide layer, thus can improve metal oxide layer interior porosity accordingly, thus the intensity of enhanced products and weather resistance, and improve product to the degradation efficiency of gaseous contaminant in air-flow; On the other hand, it is ensured that the precursor liquid comprising predecessor is uniformly distributed in carrier surface, thus it is precisely controlled the predecessor unit are abundance at carrier surface, it is hereby achieved that metal oxide layer in uniform thickness, to improve the qualification rate of product.
In any of the above-described technical scheme, in described sprayed deposit technique, the nozzle of spray gun used is 5cm��20cm with the distance on the surface of described carrier, the angle on the surface of the nozzle of described spray gun and described carrier is 0 �㡫90 ��, the atomization rates of described spray gun is 1ml/min��300ml/min, and described spray gun translational speed on the surface of described carrier is 1cm/min��50cm/min.
In sprayed deposit technique, under conventional atomizing pressure, the distance on the surface controlling nozzle and carrier is not less than 5cm, this can strengthen the atomizing effect to precursor liquid, and then guarantee the purpose that can reach to improve the porosity within metal oxide layer, additionally, the distance on the surface controlling nozzle and carrier is not more than 20cm, the spray gun spray pressure to precursor liquid can be utilized with this, the metal-oxide formed after promoting predecessor oxidation permeates to carrier, thus improving the metal oxide layer adhesive strength at carrier surface further, improve weatherability and the intensity of product; Further, it is preferable to the above-mentioned nozzle of spray gun used is 8cm��15cm with the distance on the surface of carrier; The distance that can further control the nozzle of spray gun used and the surface of carrier is 10cm��12cm, and this can obtain the factor optimal design of comprehensive above two aspects; Certainly, this method is not limited thereto, along with the distance on rising or the reduction of atomizing pressure, the nozzle of spray gun used and the surface of carrier can rise or fall therewith by a small margin.
In sprayed deposit technique, under conventional atomizing pressure, the angle controlling the nozzle of spray gun and the surface of described carrier is 0 �㡫90 ��; Under general spraying state, the angle on the surface of the nozzle of preferred spray gun and described carrier is 90 ��, the precursor liquid farthest guaranteeing with this to comprise predecessor is at the distributing homogeneity of carrier surface, so that it is guaranteed that burning layer thickness homogeneity, the metal-oxide that spray gun is formed after the spray pressure of precursor liquid promotes predecessor oxidation also can be farthest utilized to permeate to carrier with this, thus improving the metal oxide layer adhesive strength at carrier surface; Certainly, time for needs Partial controll burning layer thickness, it is possible to change to reach the purpose of Partial controll burning layer thickness in the scope of 0 �㡫90 �� by the angle on the surface of the nozzle with described carrier that control spray gun.
In sprayed deposit technique, under conventional atomizing pressure, the atomization rates controlling spray gun is 1ml/min��300ml/min, and control spray gun translational speed on the surface of carrier is 1cm/min��50cm/min, this design is under the premise guaranteeing production efficiency, the porosity of the metal oxide layer that the porosity of the metal oxide layer obtained obtains far above existing compound or impregnation technology, thus improving the finished product degradation property to gaseous contaminant.
To sum up, this programme is by factors such as Comprehensive Control nozzle and the distance on surface of carrier, nozzle and the angle on surface of carrier, the atomization rates of spray gun and spray gun translational speeds on the surface of carrier, porosity metal oxide layer high, in uniform thickness can be obtained, improve the quality of product with this.
In any of the above-described technical scheme, it is preferable that in described sprayed deposit technique, the nozzle of spray gun used is pressure atomized fog jet, gas atomizing nozzle or ultrasonic atomizing nozzle.
The nozzle of spray gun selects pressure atomized fog jet, gas atomizing nozzle or ultrasonic atomizing nozzle all can obtain and meet the intended burning Rotating fields of this method; Certainly, for different cost control requirements and quality of workers situation, in this programme, spray gun can also select other types nozzle, will not enumerate herein, but all should in the protection domain of this programme.
In any of the above-described technical scheme, in described spraying coating process, described precursor liquid is driven by carrier gas, and described carrier gas comprises oxygen.
In this programme, it is arranged in the carrier gas of driving precursor liquid and comprises oxygen, for instance carrier gas is air, or oxygen and the mixed gas such as noble gases such as nitrogen, this can improve predecessor and be oxidized into the efficiency of metal-oxide, thus can accelerate the process of spraying coating process on the one hand, reduces production consuming time;The forming process of metal oxide layer can be accelerated on the other hand, this can improve the porosity of metal oxide layer microcosmic loose structure, thus not only increase the degradation efficiency of catalytic module, and improve the metal oxide layer penetrating power in carrier inside, make metal oxide layer adhesive force on carrier higher.
In any of the above-described technical scheme, before described spraying process, described predecessor is dissolved in solvent, and stirs to make described precursor liquid.
In any of the above-described technical scheme, in described preheating step, described first preset temperature is in the scope of 300 DEG C��1300 DEG C.
What deserves to be explained is, in this programme, metal oxide layer is the auxiliary catalysis part that can be aoxidized by gaseous contaminant in catalytic module, and preferably the predecessor of this metal oxide layer is one or more in manganese salt, cobalt salt, iron salt, mantoquita, nickel salt, titanium salt, aluminium salt herein; Certainly, predecessor be particularly preferred as in manganese nitrate, cobalt nitrate, ferrum nitrate, copper nitrate, nickel nitrate, Titanium alkoxides, titanium nitrate, aluminum nitrate one or more; Based on this, the burning material that the metal oxide layer of formation comprises is accordingly for MnO2��Mn3O4��Co3O4��Fe2O3��Fe3O4��CuO��NiO��TiO2��Al2O3In one or more.
What deserves to be explained is, for apparatuses of air conditioning such as general air-conditioning, air purifiers, the carrier of its application can be preferably the metal alloy carriers such as aluminum, aluminium alloy, Fe-Cr-Al alloy, Fe-Ni-Cr alloy, Ni-Cr alloy, Ni-Fe alloy, or is preferably the ceramic monolith such as cordierite ceramic, mullite ceramic carrier.
Based on this, this method arranges the first preset temperature and is not less than 300 DEG C, it is however generally that, the temperature of 300 DEG C is enough to make above-mentioned predecessor fully oxidized for metal-oxide in the short period of time; It addition, this method arranges the first preset temperature not higher than 1300 DEG C, to avoid above-mentioned carrier at high temperature to deform; Further, it is preferable to the first preset temperature is in the scope of 300 DEG C��1000 DEG C; Comprehensive oxidation efficiency and carrier aesthetics considerations, further design the first preset temperature in the scope of 400 DEG C��600 DEG C for the best.
In any of the above-described technical scheme, in described preheating step, described carrier passes through direct electro heating, or is heated by heat radiation mode, or is heated by heat exchange pattern.
What deserves to be explained is, the concrete shape of carrier can substantially control as body shape, lamellar or cystose, for lamellar, body shape or foamed metallic carrier, it is preferable that heated by direct electro heating or heat radiation mode; For lamellar, body shape or foamed non-metal carrier, it is preferable that heated by heat radiation mode; And for chip carrier, it is preferable that heated by heat exchange pattern from one side, and carry out spraying coating process process in its non-heated side.
More specifically, described carrier is the electrical heating fin of air-conditioner, or is independent catalytic carrier module.
In any of the above-described technical scheme, the thickness of described metal oxide layer is 0.2 ��m��500 ��m, and 0.0001��0.01 times that described noble metal weight is described metal oxide layer weight.
This programme controls the thickness of metal oxide layer more than 0.2 ��m on the one hand, it is implemented difficulty and is relatively low, can be easy to control the uniformity that metal oxide layer makes with this, particularly with needs by gaseous contaminant isolated situation from air-flow, the thickness of metal oxide layer is set near 0.2 ��m, it can be ensured that gaseous contaminant mass-energy enough penetrates this metal oxide layer;On the other hand, this programme controls the thickness of metal oxide layer below 500 ��m, with this problem that can avoid the occurrence of the internal plug-hole of metal oxide layer, it is ensured that the catalytic module degradation efficiency to gaseous contaminant; Based on this, design noble metal weight is 0.0001��0.01 times of metal oxide layer weight, this can ensure that noble metal dispersibility in the internal pore structure of metal oxide layer, noble metal and the metal oxide layer degradation efficiency to gaseous contaminant is coordinated with this, then by this design while guaranteeing catalytic module catalysis high efficiency, it is possible to avoid the excessive problem causing product cost too high of noble metal; Further, it is preferable to noble metal weight is metal oxide layer weight 0.0005��0.001 times; Further, it is preferable that noble metal weight is 0.001 times of metal oxide layer weight.
In any of the above-described technical scheme, before described deposition step, by described catalytic module isothermal holding under the second preset temperature.
By catalytic module isothermal holding under the second preset temperature in this method, this can eliminate the tissue defects in metal oxide layer, and improves the distribution of component of organization, improves the mechanical property of metal oxide layer self and its bonding strength with carrier.
In any of the above-described technical scheme, described second preset temperature is equal to described first preset temperature; The insulation duration of described isothermal holding is more than 0min, and less than or equal to 120min.
What deserves to be explained is, in this method, the second preset temperature is lower than the deformation temperature of carrier, specifically numerically, designer can set according to the requirement of strength design of metal oxide layer, wherein, preferably set the second preset temperature equal to the first preset temperature, to improve metal oxide layer interior tissue component distributing in this insulating process further, improve metal oxide layer self mechanical property and with the bonding strength of carrier, and without repeatedly setting the heating-up temperature of heater in the program, thus simplifying product processes; Certainly, with regard to improve metal oxide layer self mechanical property and with the purpose of the bonding strength of carrier for, it is possible to the second preset temperature is set slightly above the first preset temperature or slightly below the first preset temperature.
It addition, the control of this insulation duration is also relatively flexible, according to concrete technology design, insulation duration can be controlled further at 20min��80min; Consider yield issues, can further insulation duration be controlled at 40min��60min.
In any of the above-described technical scheme, atom layer deposition process, chemical vapor deposition method, immersion deposition technique or sprayed deposit technique is adopted to make described noble metal loading on described metal oxide layer.
It is understood that noble metal is one or more in Pt, Pd, Ru, Rh, Au, Ag; Further, noble metal is preferably Pt, Pd and/or Pt-Pd alloy.
Preferably employ atom layer deposition process in such scheme, chemical vapor deposition method, immersion deposition technique make noble metal loading on metal oxide layer, can save noble metal consumption with this.
In any of the above-described technical scheme, after described deposition step, under reducing atmosphere described catalytic module is carried out heat treatment.
The noble metal that can be will be dispersed in metal oxide layer by this step becomes the form of the element of noble metal, thus being effectively ensured the noble metal degradation effect to gaseous contaminant. Certainly, this programme is not limited thereto, it is possible to directly catalytic module is carried out heat treatment.
In any of the above-described technical scheme, carry out described heat treatment at hydrogen atmosphere; Described heat treated temperature is 150 DEG C��300 DEG C, and described heat treated duration is more than 0min, and less than or equal to 60min.
The embodiment of second aspect present invention provides a kind of catalytic module, and described catalytic module includes: carrier; With the metal oxide layer including noble metal, adopt the catalytic module described in any of the above-described embodiment preparation method formed at described carrier surface.
The catalytic module that the embodiment of second aspect present invention provides, it adopts the preparation method of catalytic module that the embodiment of first aspect present invention provides to be processed into, and making to have between the carrier of catalytic module and its metal oxide layer stronger bonding strength, this can be avoided the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from its carrier surface, additionally, under metal oxide layer microcosmic in this product, the porosity of loose structure is high, this makes the noble metal being deposited on metal oxide layer more uniformly spread on the one hand, thus improving the product degradation efficiency to gaseous contaminant, and the loose structure of high voidage is stronger to the absorbability of gaseous contamination, this is beneficial to gaseous contamination and uniformly spreads in hole, catalytic module is can further improve under high wind speed to the detergent power of air-flow and degradation effect with this, metal oxide layer is stronger at infiltration and the adhesive ability of carrier inside on the other hand, and make the metal oxide layer of product have higher adhesive strength at its carrier surface, thus can avoid the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from carrier surface, improve product weatherability, make it more reliable.
The embodiment of third aspect present invention provides a kind of apparatus of air conditioning, and including the catalytic module described in equipment body and above-described embodiment, described catalytic module is positioned at the air channel of described equipment body.
The apparatus of air conditioning that the embodiment of third aspect present invention provides, by arranging the catalytic module that the embodiment of second aspect present invention provides, thus having whole beneficial effects that above-mentioned catalytic module has, does not repeat them here.
Alternatively, the described apparatus of air conditioning is air-conditioning or air purifier.
The additional aspect of the present invention and advantage will become apparent upon in description below part, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 is the schematic flow sheet of the preparation method of catalytic module described in one embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail. It should be noted that when not conflicting, embodiments herein and the feature in embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention; but; the present invention can also adopt other to be different from other modes described here to implement, and therefore, protection scope of the present invention is by the restriction of following public specific embodiment.
As it is shown in figure 1, the preparation method of the catalytic module described in one embodiment of the invention, including:
Step 102, by carrier heating to the first preset temperature;
Step 104, adopts the spraying coating process surface spraying precursor liquid to carrier, and the predecessor in precursor liquid is oxidized later at carrier surface formation metal oxide layer;
Step 106, depositing noble metal on metal oxide layer.
The preparation method of catalytic module provided by the invention, adopt spraying coating process to the surface spraying precursor liquid of carrier after heating, the heat on carrier is utilized to make the predecessor generation oxidation reaction in precursor liquid, and the metal-oxide generated is directly loaded in carrier surface, thus obtaining the load burning Rotating fields at carrier surface, process implementing process is simple, implementation cost is low for this, possesses good industrial production potential, for existing combination process and impregnation technology, in this method, the quantity for spray of predecessor is easily controllable, with this burning layer thickness being easy to control generation, thus improving the qualification rate of product, and predecessor aoxidizes at carrier surface in this method, and the process of metal-oxide molding is extremely rapid, this makes the efficiency preparing catalytic module be obviously improved, the metal oxide layer internal structure additionally obtained under this rapidly molding is more fluffy, which greatly improves the porosity of metal oxide layer microcosmic loose structure, thus can increase the noble metal effective depositional area on metal oxide layer on the one hand, it is beneficial to noble metal in metal oxide layer inner dispersion, thus improving the catalytic module degradation efficiency to gaseous contaminant, and the porosity improving loose structure can improve its absorbability to gaseous contamination accordingly herein, it is beneficial to gaseous contaminant uniformly spread in hole, catalytic module is can further improve under high wind speed to the detergent power of air-flow and degradation effect with this, metal oxide layer can be improved on the other hand at the infiltration of carrier inside and adhesive ability, thus improving metal oxide layer in carrier surface adhesive strength, thus can avoid the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from carrier surface, improve product weatherability, make it more reliable.
In above-described embodiment, more specifically: in a step 102, the first preset temperature should equal to or higher than the oxidizing temperature of the predecessor in precursor liquid, and the first preset temperature is lower than the deformation temperature of carrier; This step can specifically adopt direct electro heating, or is heated by heat radiation mode, or by heat exchange pattern heating, carrier is heated.
Additionally, the predecessor composition design that can comprise according to precursor liquid at step 104, and according to the type of used carrier in step 102, correspondingly the first preset temperature value in design procedure 102; Specifically, the predecessor of this metal oxide layer is one or more in manganese salt, cobalt salt, iron salt, mantoquita, nickel salt, titanium salt, aluminium salt; Certainly, predecessor be particularly preferred as in manganese nitrate, cobalt nitrate, ferrum nitrate, copper nitrate, nickel nitrate, Titanium alkoxides, titanium nitrate, aluminum nitrate one or more, based on this, the burning material that the metal oxide layer of formation comprises is accordingly for MnO2��Mn3O4��Co3O4��Fe2O3��Fe3O4��CuO��NiO��TiO2��Al2O3In one or more; And carrier can be the metal alloy carriers such as aluminum, aluminium alloy, Fe-Cr-Al alloy, Fe-Ni-Cr alloy, Ni-Cr alloy, Ni-Fe alloy, or being the ceramic monolith such as cordierite ceramic, mullite ceramic carrier, support shapes can be lamellar, body shape or cystose; Based on this, the first preset temperature may be provided in the scope of 300 DEG C��1300 DEG C.
At step 104, it is preferable that spraying coating process is sprayed deposit technique, wherein, it is preferable that in this spraying coating process, the nozzle of spray gun used is pressure atomized fog jet, gas atomizing nozzle or ultrasonic atomizing nozzle; And in spraying process, utilize the carrier gas comprising oxygen to drive precursor liquid, to promote that the predecessor in precursor liquid aoxidizes.
In above-mentioned sprayed deposit technique, specifically, the nozzle of spray gun used is 5cm��20cm with the distance on the surface of carrier, the angle on the nozzle of spray gun and the surface of carrier is 0 �㡫90 ��, the atomization rates of spray gun is 1ml/min��300ml/min, and spray gun translational speed on the surface of carrier is 1cm/min��50cm/min.
At step 104, the thickness of the metal oxide layer of formation is 0.2 ��m��500 ��m, correspondingly, noble metal weight is metal oxide layer weight 0.0001��0.01 times deposited in step 106, so can ensure that the catalysis high efficiency of catalytic module.
In step 106, it is to be understood that noble metal is one or more in Pt, Pd, Ru, Rh, Au, Ag; Further, noble metal is preferably Pt, Pd and/or Pt-Pd alloy; It is specifically, it is possible to adopts atom layer deposition process, chemical vapor deposition method, immersion deposition technique or sprayed deposit technique to make noble metal loading on metal oxide layer, can save noble metal consumption with this.
It addition, in some embodiments of the invention, also can comprise the steps of
Between step 102 and step 104, or before step 102, may also include the preparation process of precursor liquid, its specifically: predecessor is dissolved in solvent, and stirs to make precursor liquid; Wherein, solvent can comprise water, ethanol, acetone etc.
Between step 104 and step 106, may also include isothermal holding step, to improve mechanical property and its bonding strength with carrier of metal oxide layer self; It is specifically: the catalytic module (being namely formed with the carrier of metal oxide layer) prepared in step 104 is carried out isothermal holding under the second preset temperature; Its preferably, the second preset temperature be equal to the first preset temperature; The insulation duration of described isothermal holding is more than 0min, and less than or equal to 120min.
After step 106, may also include reduction step, namely under reducing atmosphere catalytic module is carried out heat treatment, will be dispersed in the form that the noble metal in metal oxide layer becomes the element of noble metal, so can improve the noble metal degradation effect to gaseous contaminant; It specifically carries out heat treatment at hydrogen atmosphere; Heat treated temperature is 150 DEG C��300 DEG C, and heat treated duration is more than 0min, and less than or equal to 60min.
The preparation method that the catalytic module of the present invention is described below by detailed example:
In first specific embodiment of the present invention, the base material of carrier is the aluminium alloy of lamellar, and the deformation temperature of the aluminium alloy of this lamellar is 670 DEG C, and the aluminium alloy of this lamellar can be absolute construction, or is the fin structure in the air channel of the apparatus of air conditioning.
This is embodied as comprising the steps of
1st step, by soluble in water for the predecessor that key component is manganese nitrate, and stirs with prepared precursor liquid;
2nd step, makes it heat up the aluminum alloy support energising of lamellar, until the aluminum alloy support temperature of lamellar arrives 500 DEG C;
3rd step, utilizes spray gun that precursor liquid is sprayed on the aluminum alloy surface of lamellar, and wherein, the nozzle of spray gun selects ultrasonic atomizing nozzle, and the parameter of this ultrasonic atomizing nozzle is preferably controlled in 0.5 ��m-2 ��m; Carrier gas in spraying process is oxygen, during spraying, ultrasonic atomizing nozzle is 14cm with the distance on the aluminum alloy support surface of lamellar, during spraying, ultrasonic atomizing nozzle is 90 �� with the angle on the aluminum alloy support surface of lamellar, during spraying, ultrasonic atomizing nozzle place atomization rates is 20ml/min, and ultrasonic atomizing nozzle moves back and forth on the aluminum alloy support surface of lamellar with the movement rate of 5cm/min, so that it is 80 ��m that the aluminum alloy support surface of lamellar ultimately forms thickness, and Main Ingredients and Appearance is MnO2Metal oxide layer;
The catalytic module semi-finished product processing acquisition in 3rd step are incubated 10min by the 4th step at 500 DEG C;
5th step, adopts atom layer deposition process to be deposited on metal oxide layer by Pt, and wherein, the weight of Pt and the weight ratio of metal oxide layer are 0.5%;
6th step, carries out heat treatment in a hydrogen atmosphere by the catalytic module obtained in the 5th step, and this heat treatment temperature is 200 DEG C, and heat treatment duration is 30min. Catalytic module finished product is obtained after its cooling.
Through the catalytic module that above-mentioned specific embodiment prepares, it is placed in the air channel of the apparatus of air conditioning, on catalytic efficiency, when in air channel, wind speed is 300m3During/h, detect that the degradation efficiency of 100ppm formaldehyde is 100% by product; In weatherability, controlling wind speed in air channel is 300m3/ h and using 1000 hours continuously, detect product degradation efficiency be dropped by less than 1%.
In second specific embodiment of the present invention, the base material of carrier is foamed Fe-Cr-Al alloy, and the deformation temperature of this foamed Fe-Cr-Al alloy is 1200 DEG C.
This is embodied as comprising the steps of
1st step, utilization is added the heating element heaters such as hot plate and by heat exchange pattern, foamed Fe-Cr-Al alloy carrier is heated, until foamed Fe-Cr-Al alloy carrier temperature arrives 800 DEG C;
2nd step, by soluble in water for the predecessor that key component is nitric acid aluminium salt, and stirs with prepared precursor liquid;
3rd step, utilizes spray gun that precursor liquid is sprayed on foamed Fe-Cr-Al alloy carrier surface, and wherein, the nozzle of spray gun selects pressure atomized fog jet, and the parameter of this pressure atomized fog jet is preferably controlled in 1 ��m-10 ��m; Carrier gas in spraying process is air, during spraying, pressure atomized fog jet is 5cm with the distance on foamed Fe-Cr-Al alloy carrier surface, during spraying, ultrasonic atomizing nozzle is 85 �� with the angle on foamed Fe-Cr-Al alloy carrier surface, during spraying, ultrasonic atomizing nozzle place atomization rates is 50ml/min, and ultrasonic atomizing nozzle moves back and forth on foamed Fe-Cr-Al alloy carrier surface with the movement rate of 15cm/min, so that foamed Fe-Cr-Al alloy carrier surface ultimately forms thickness and is 150 ��m and Main Ingredients and Appearance is Al2O3Metal oxide layer;
The catalytic module semi-finished product processing acquisition in 3rd step are incubated 20min by the 4th step at 800 DEG C;
5th step, adopts chemical vapor deposition method to be deposited on metal oxide layer by Pt, and wherein, the weight of Pt and the weight ratio of metal oxide layer are 1%;
6th step, carries out heat treatment by the catalytic module obtained in the 5th step, and this heat treatment temperature is 200 DEG C, and heat treatment duration is 30min. Catalytic module finished product is obtained after its cooling.
Through the catalytic module that above-mentioned specific embodiment prepares, it is placed in the air channel of the apparatus of air conditioning, on catalytic efficiency, when in air channel, wind speed is 300m3During/h, detect that the degradation efficiency of 100ppm dimethylbenzene (150 DEG C) is 99% by product; In weatherability, controlling wind speed in air channel is 300m3/ h and using 1000 hours continuously, detect product degradation efficiency be dropped by less than 1%.
In the 3rd specific embodiment of the present invention, the base material of carrier is the carrier cordierite ceramic of lamellar, and the deformation temperature of the carrier cordierite ceramic of this lamellar is 1000 DEG C.
This is embodied as comprising the steps of
1st step, by soluble in water for the predecessor that key component is cobalt nitrate, and stirs with prepared precursor liquid;
2nd step, utilizes and adds the heating element heaters such as hot plate, by heat exchange pattern, the first plate face of the carrier cordierite ceramic of lamellar is heated, until the carrier cordierite ceramic temperature of lamellar arrives 600 DEG C;
3rd step, utilize spray gun that precursor liquid is sprayed on the second plate face of carrier cordierite ceramic of this lamellar, and this second plate face deviates from mutually with the first plate face, wherein, the nozzle of spray gun selects gas atomizing nozzle, and the parameter of this gas atomizing nozzle is preferably controlled in 2 ��m-50 ��m; Carrier gas in spraying process is air, during spraying, gas atomizing nozzle is 20cm with the distance in the second plate face of carrier cordierite ceramic, during spraying, gas atomizing nozzle is 90 �� with the angle in the second plate face of carrier cordierite ceramic, during spraying, gas atomizing nozzle place atomization rates is 202ml/min, and gas atomizing nozzle is with the second plate face single-way moving at the carrier cordierite ceramic of lamellar of the movement rate of 30cm/min, so that it is 350 ��m that the second plate face of the carrier cordierite ceramic of lamellar ultimately forms thickness, and Main Ingredients and Appearance is Co3O4Metal oxide layer;
The catalytic module semi-finished product processing acquisition in 3rd step are incubated 30min by the 4th step at 600 DEG C;
5th step, adopts immersion deposition technique to be deposited on metal oxide layer by Au, and wherein, the weight of Au and the weight ratio of metal oxide layer are 0.5%;
6th step, carries out heat treatment in a hydrogen atmosphere by the catalytic module obtained in the 5th step, and this heat treatment temperature is 250 DEG C, and heat treatment duration is 60min. Catalytic module finished product is obtained after its cooling.
Through the catalytic module that above-mentioned specific embodiment prepares, it is placed in the air channel of the apparatus of air conditioning, on catalytic efficiency, when in air channel, wind speed is 300m3During/h, detect that the degradation efficiency of 100ppm dimethylbenzene (180 DEG C) is 99% by product; In weatherability, controlling wind speed in air channel is 300m3/ h and using 1000 hours continuously, detect product degradation efficiency be dropped by less than 2%.
As fully visible, even if the catalytic module product that said method of the present invention prepares is under very harsh working condition, still having significant degradation efficiency and weatherability, this is more conducive to product popularization in field.
Catalytic module provided by the invention, it adopts the preparation method of the catalytic module described in any of the above-described embodiment to be processed into. this makes to have between the carrier of catalytic module and its metal oxide layer stronger bonding strength, and this can be avoided the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from its carrier surface, additionally, under metal oxide layer microcosmic in this product, the porosity of loose structure is high, this makes the noble metal being deposited on metal oxide layer more uniformly spread on the one hand, thus improving the product degradation efficiency to gaseous contaminant, and the loose structure of high voidage is stronger to the absorbability of gaseous contamination, this is beneficial to gaseous contamination and uniformly spreads in hole, catalytic module is can further improve under high wind speed to the detergent power of air-flow and degradation effect with this, metal oxide layer is stronger at infiltration and the adhesive ability of carrier inside on the other hand, and make the metal oxide layer of product have higher adhesive strength at its carrier surface, thus can avoid the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from carrier surface, improve product weatherability, make it more reliable.
The apparatus of air conditioning provided by the invention, including the catalytic module described in equipment body and above-described embodiment, described catalytic module is positioned at the air channel of described equipment body. This apparatus of air conditioning, by arranging the catalytic module that above-described embodiment provides, thus having whole beneficial effects that above-mentioned catalytic module has, does not repeat them here.
Alternatively, the apparatus of air conditioning is air-conditioning or air purifier.
In sum, the preparation method of catalytic module provided by the invention, adopt spraying coating process to the surface spraying precursor liquid of carrier after heating, the heat on carrier is utilized to make the predecessor generation oxidation reaction in precursor liquid, and the metal-oxide generated is directly loaded in carrier surface, thus obtaining the load burning Rotating fields at carrier surface, process implementing process is simple, implementation cost is low for this, possesses good industrial production potential, for existing combination process and impregnation technology, in this method, the quantity for spray of predecessor is easily controllable, with this burning layer thickness being easy to control generation, thus improving the qualification rate of product, and predecessor aoxidizes at carrier surface in this method, and the process of metal-oxide molding is extremely rapid, this makes the efficiency preparing catalytic module be obviously improved, the metal oxide layer internal structure additionally obtained under this rapidly molding is more fluffy, which greatly improves the porosity of metal oxide layer microcosmic loose structure, thus can increase the noble metal effective depositional area on metal oxide layer on the one hand, it is beneficial to noble metal in metal oxide layer inner dispersion, thus improving the catalytic module degradation efficiency to gaseous contaminant, and the porosity improving loose structure can improve its absorbability to gaseous contamination accordingly herein, it is beneficial to gaseous contaminant uniformly spread in hole, catalytic module is can further improve under high wind speed to the detergent power of air-flow and degradation effect with this, metal oxide layer can be improved on the other hand at the infiltration of carrier inside and adhesive ability, thus improving metal oxide layer in carrier surface adhesive strength, thus can avoid the problem that under harsh operating conditions, the metal oxide layer of catalytic module is peeled off from carrier surface, improve product weatherability, make it more reliable, and catalytic module provided by the invention, because adopting this said method to make, there is higher degradation efficiency and good weather resistance, the apparatus of air conditioning provided by the invention, has above beneficial effect because arranging this catalytic module.
In the present invention, term " first ", " second ", " the 3rd " only for descriptive purposes, and it is not intended that instruction or hint relative importance.
In the description of this specification, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment or the example of the present invention. In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example. And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. the preparation method of a catalytic module, it is characterised in that including:
Preheating step, by carrier heating to the first preset temperature;
Spraying process, adopt spraying coating process to the surface spraying precursor liquid of described carrier after heating, wherein, described first preset temperature is not less than in described precursor liquid the oxidizing temperature of predecessor, and the predecessor of described precursor liquid oxidized after form metal oxide layer on the surface of described carrier;
Deposition step, depositing noble metal on described metal oxide layer.
2. the preparation method of catalytic module according to claim 1, it is characterised in that
In described spraying process, described spraying coating process is sprayed deposit technique;
In described sprayed deposit technique, the nozzle of spray gun used is 5cm��20cm with the distance on the surface of described carrier, the angle on the surface of the nozzle of described spray gun and described carrier is 0 �㡫90 ��, the atomization rates of described spray gun is 1ml/min��300ml/min, and described spray gun translational speed on the surface of described carrier is 1cm/min��50cm/min.
3. the preparation method of catalytic module according to claim 1 and 2, it is characterised in that
In described spraying coating process, described precursor liquid is driven by carrier gas, and described carrier gas comprises oxygen.
4. the preparation method of catalytic module according to claim 1 and 2, it is characterised in that
The thickness of described metal oxide layer is 0.2 ��m��500 ��m, and 0.0001��0.01 times that described noble metal weight is described metal oxide layer weight.
5. the preparation method of catalytic module according to claim 1 and 2, it is characterised in that
Before described deposition step, by described catalytic module isothermal holding under the second preset temperature.
6. the preparation method of catalytic module according to claim 5, it is characterised in that
Described first preset temperature is within the scope of 300 DEG C��1300 DEG C;
Described second preset temperature is equal to described first preset temperature; The insulation duration of described isothermal holding is more than 0min, and less than or equal to 120min.
7. the preparation method of catalytic module according to claim 1 and 2, it is characterised in that
Atom layer deposition process, chemical vapor deposition method, immersion deposition technique or sprayed deposit technique is adopted to make described noble metal loading on described metal oxide layer.
8. the preparation method of catalytic module according to claim 1 and 2, it is characterised in that
After described deposition step, under reducing atmosphere described catalytic module is carried out heat treatment;
Described heat treated temperature is 150 DEG C��300 DEG C, and described heat treated duration is more than 0min, and less than or equal to 60min.
9. a catalytic module, it is characterised in that including:
Carrier; With
Include the metal oxide layer of noble metal, adopt the preparation method of the catalytic module according to any one of claim 1 to 8 formed as described in carrier surface.
10. an apparatus of air conditioning, it is characterised in that including:
Equipment body; With
Catalytic module as claimed in claim 9, is positioned at the air channel of described equipment body.
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