CN109675549A - A kind of stratiform MXene doping prepares the method for catalyst and the application in gas purification - Google Patents
A kind of stratiform MXene doping prepares the method for catalyst and the application in gas purification Download PDFInfo
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- CN109675549A CN109675549A CN201910016002.2A CN201910016002A CN109675549A CN 109675549 A CN109675549 A CN 109675549A CN 201910016002 A CN201910016002 A CN 201910016002A CN 109675549 A CN109675549 A CN 109675549A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000000746 purification Methods 0.000 title claims abstract description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006185 dispersion Substances 0.000 claims abstract description 16
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 5
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 229910052763 palladium Inorganic materials 0.000 claims abstract description 3
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 3
- 239000007788 liquid Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 3
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 229910009818 Ti3AlC2 Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 229920000609 methyl cellulose Polymers 0.000 claims description 3
- 239000001923 methylcellulose Substances 0.000 claims description 3
- 229910017604 nitric acid Inorganic materials 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims description 3
- 239000012855 volatile organic compound Substances 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- 229910003074 TiCl4 Inorganic materials 0.000 claims description 2
- 229910010298 TiOSO4 Inorganic materials 0.000 claims description 2
- 238000005119 centrifugation Methods 0.000 claims description 2
- KADRTWZQWGIUGO-UHFFFAOYSA-L oxotitanium(2+);sulfate Chemical compound [Ti+2]=O.[O-]S([O-])(=O)=O KADRTWZQWGIUGO-UHFFFAOYSA-L 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 239000006228 supernatant Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000006555 catalytic reaction Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000035699 permeability Effects 0.000 abstract description 3
- 238000004887 air purification Methods 0.000 abstract description 2
- 150000001455 metallic ions Chemical class 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 229910009819 Ti3C2 Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000008118 PEG 6000 Substances 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229920002582 Polyethylene Glycol 600 Polymers 0.000 description 1
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- XDBSEZHMWGHVIL-UHFFFAOYSA-M hydroxy(dioxo)vanadium Chemical compound O[V](=O)=O XDBSEZHMWGHVIL-UHFFFAOYSA-M 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- -1 metals ion Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
- 239000002539 nanocarrier Substances 0.000 description 1
- XNHGKSMNCCTMFO-UHFFFAOYSA-D niobium(5+);oxalate Chemical compound [Nb+5].[Nb+5].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O XNHGKSMNCCTMFO-UHFFFAOYSA-D 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- GPNDARIEYHPYAY-UHFFFAOYSA-N palladium(ii) nitrate Chemical compound [Pd+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O GPNDARIEYHPYAY-UHFFFAOYSA-N 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000349 titanium oxysulfate Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- 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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8628—Processes characterised by a specific catalyst
-
- 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
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- 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
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/20—Vanadium, niobium or tantalum
-
- 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
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/32—Manganese, technetium or rhenium
- B01J23/34—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
- B01J23/38—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
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The invention belongs to air purification field, especially a kind of stratiform MXene doping prepares the method for catalyst and the application in gas purification；The catalyst the preparation method comprises the following steps: MXene two-dimensional nano piece is dispersed in TiO2In aqueous sol, then catalyst activity composition V/W or Ce/Mn or Nb/Pd or Pt isoreactivity ion are introduced in colloidal sol, drying and sintering grinds to obtain the catalyst powder of two dimension, three-dimensional package assembly；Two-dimensional layer MXene nanometer sheet and active metallic ion are prepared catalyst by collosol and gel route by the present invention, the catalyst that is introduced as of MXene material provides more active sites, make transmission path meander configuration path of the gas in catalyst simultaneously, the time of contact for increasing gas and catalyst improves the catalytic efficiency of catalyst；Catalyst activity component dispersion degree height, large specific surface area, hole permeability are good, and preferable catalytic capability is shown in gas catalysis.
Description
Technical field
The invention belongs to air purification field, especially a kind of stratiform MXene doping prepares the method for catalyst and in gas
Application in body purification.
Background technique
In recent years, MXenes material has unique layer structure, certainly due to having the two-dimensional structure of similar graphene
It is lubrication, high tenacity, electrically conductive, the advantages of combining ceramics and metal, attracts and more and more pay close attention to.Currently, MXenes material
It is successfully widely used in supercapacitor in electrochemistry, lithium ion battery, solar battery, energy storage, oxygen evolution reaction etc., effect
Fruit is significant, however the application in catalytic field is then relatively fewer.
Therefore by dispersing two-dimensional layer MXenes material in nano-carrier, supported active metals ion is net for gas
Changing has good catalytic performance.The introducing of two-dimentional MXenes material makes catalyst can be uniformly distributed in nanometer sheet surface to be formed
Unique two dimension, three-dimensional package assembly for the active site that catalyst provides more, while increasing gas and catalyst
Time of contact, to improve catalytic efficiency.
Summary of the invention
The purpose of the present invention is: aiming at the problem that gas purification, provide the side that a kind of stratiform MXene doping prepares catalyst
Method, the catalyst have a two dimension, three-dimensional package assembly, and active component disperses that height, large specific surface area, hole permeability be good, catalytic efficiency
It is high；Another object of the present invention is: providing a kind of application of the catalyst of stratiform MXene doping, two-dimensional layer MXene is mixed
Miscellaneous catalyst is applied to denitrating flue gas, VOCs removing.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of method that stratiform MXene doping prepares catalyst, the catalyst have two and three dimensions package assembly；The system
Preparation Method the following steps are included:
(1) preparation of MXene solution: by Ti3AlC2Particle, which is placed in 40%HF at 25 DEG C, stirs 2h, is centrifugated, dry,
It disperses obtained powder in deionized water and obtains dispersion liquid, the concentration of the dispersion liquid is 2mg/mL, and dispersion liquid is being flowed
Ultrasound 2h under dynamic argon gas, centrifugation, takes supernatant liquor to obtain MXene solution；
(2) MXene solution is taken, deionized water is added in 1 ~ 2h of ultrasound, and titanium precursors, dispersing agent, 1 ~ 4h of acid stirring obtain solution A；
(3) preparation of catalyst active component: metal salt is dissolved in deionized water and obtains solution B；
(4) solution B is added in solution A, a certain amount of adhesive is added in stirring, and 1 ~ 4h of stirring obtains solution C；
(5) solution C is taken to be dried to obtain solid D；
(6) sintering obtains catalyst.
Further, the titanium precursors in the step (2) are TiOSO4, TiCl4, Ti (SO4)2One or both of.
Further, the dispersing agent in the step (2) is one of ethylene glycol, glycerol, lauryl sodium sulfate.
Further, the acid in the step (2) is one of oxalic acid, citric acid, hydrochloric acid and nitric acid.
Further, the metal salt in the step (3) is the soluble metal of V/W or Ce/Mn or Nb/Pd or P
Salt.
Further, the adhesive in the step (4) is one of polyethylene glycol, polyvinyl alcohol, methylcellulose.
Further, the titanium precursors in the step (2) and step (4), dispersing agent, acid, the molar ratio of adhesive are
1 ︰, 1 ~ 6 ︰, 1 ~ 4 ︰ 1 ~ 4.
Further, in the step (2) quality of MXene with TiO2Quality be calculated as 1 ~ 6wt.%, gold in step (3)
Belong to the load capacity of salt with TiO2Quality be calculated as 1 ~ 10wt.%.
Further, the drying process in the step (5) is that solution C is laid in culture dish, is in drying temperature
20 ~ 80 DEG C, dry humidity dry 12 ~ 48h under the conditions of being 40 ~ 80%RH.
Further, the sintering temperature in the step (6) is 300 ~ 700 DEG C, heating rate is 0.5 ~ 10 DEG C/min item
Under part, solid D is placed in 2 ~ 4h of sintering in Muffle furnace.
Stratiform MXene doping prepares catalyst and the application in gas purification, and the catalyst is used for cryogenic nitrogen oxygen
Compound, VOCs removing.
It is using the beneficial effect of technical solution of the present invention:
Stratiform MXene nanometer sheet and active metallic ion are introduced directly into TiO by the present invention2Catalyst is prepared in aqueous sol,
The catalyst that is introduced as of MXene material provides more active sites, while keeping transmission path of the gas in catalyst bent
Fold-type path keeps reaction more abundant, improves degradation efficiency to increase the time of contact of gas and catalyst.Catalysis
Agent active component dispersion degree height, large specific surface area, hole permeability are good, and preferable catalytic capability is shown in gas catalysis.Simultaneously
Preparation method of the invention is equally applicable to prepare the catalyst of other soluble activating salt and other carriers, has universality.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is gas in catalytic inner transmission schematic diagram；
Fig. 2 is two-dimensional layer MXene nanometer sheet AFM figure；
Fig. 3 is 2 catalyst TEM phenogram of embodiment
Fig. 4 is 2 catalyst nitrogen adsorption desorption curve figure of embodiment；
Fig. 5 is 2 difference MXexe doping catalyst denitration performance curve graph of embodiment.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
Embodiment 1
By 10g Ti3AlC2Particle is placed in 2h in 40%HF acid, centrifuge separation, and washing alcohol is washed, and low temperature drying obtains Ti3C2Tx powder
End, Ti3C2Tx powder is scattered in deionized water, concentration 2mg/mL, the ultrasound 2h under the argon gas of flowing, and centrifuge separation takes upper layer
Clear liquid obtains MXene nanometer sheet dispersion liquid (being illustrated in figure 2 two-dimensional layer MXene nanometer sheet AFM figure).4mL MXene is taken to receive
Rice piece dispersion liquid is diluted to 150mL, and 4g titanyl sulfate, 30mL ethylene glycol is added, and 4.5g citric acid obtains solution A；Take metavanadic acid
Ammonium (2wt%/TiO2), ammonium tungstate (1wt%/TiO2) be dissolved in 50mL deionized water and obtain solution B, solution B is slowly added to solution
In A, 5mL PEG-600 is added, 3 h of hybrid reaction at 25 DEG C obtains stable colloidal sol.40g colloidal sol is taken to be laid in culture dish
In, at 65 DEG C, dry 48 h, obtain solid under the conditions of 50%RH.Solid is placed in Muffle furnace, heating rate be 0.5 DEG C/
Min is sintered 3h under the conditions of 450 DEG C of temperature, and the V/W-TiO of structure is made2Catalyst.Obtained catalyst is used to remove
NOx, 98% or more denitration efficiency at 300 DEG C.
Embodiment 2
MXene nanometer sheet dispersion liquid is made by 1 method of embodiment, 8mL nanometer sheet dispersion liquid is taken to be diluted to 150mL, 4.74g is added
Titanium tetrachloride, 20mL glycerol, 2.2g oxalic acid obtain solution A；Take cerous nitrate (4wt%/TiO2), manganese nitrate (7wt%/TiO2) molten
Solution B is obtained in 50mL deionized water, solution B is slowly added in solution A, 10% PEG-6000 of 3mL is added, at 25 DEG C
Lower 3 h of hybrid reaction, obtains stable colloidal sol.40g colloidal sol is taken to be laid in culture dish, at 70 DEG C, dry 48 under the conditions of 80%RH
H obtains solid.Solid is placed in Muffle furnace, heating rate is 2 DEG C/min, is sintered 3h under the conditions of 450 DEG C of temperature, and Ce/ is made
Mn-TiO2Catalyst (its TEM phenogram is as shown in figure 3, nitrogen adsorption desorption curve figure is as shown in Figure 4).Obtained catalyst
95% or more PARA FORMALDEHYDE PRILLS(91,95) removal efficiency at 150 DEG C, 300 DEG C to NOx except 95% or more efficiency (removal of nitrogen oxide under its different temperatures
Rate is as shown in Figure 5).
Embodiment 3
MXene nanometer sheet dispersion liquid is made in 1 method of embodiment, and 4mL nanometer sheet dispersion liquid is taken to be diluted to 150mL, and 6.0g sulphur is added
Sour titanium, 5g lauryl sodium sulfate, 3mL nitric acid obtain solution A；Take niobium oxalate (1wt%/TiO2), palladium nitrate (5wt%/TiO2)
It is dissolved in 50mL deionized water and obtains solution B, solution B is slowly added in solution A, 10% methylcellulose of 5mL is added,
3 h of hybrid reaction at 25 DEG C, obtains stable colloidal sol.It takes 40g colloidal sol to be laid in culture dish, at 70 DEG C, is done under the conditions of 80%RH
Dry 48 h, obtains solid.Solid is placed in Muffle furnace, heating rate is 0.5 DEG C/min, it is sintered 3h under the conditions of 450 DEG C of temperature,
Nb/Pd-TiO is made2Catalyst.Obtained catalyst is used to be catalyzed to burn and removes benzene,toluene,xylene, 150 DEG C
When to 95% or more benzene,toluene,xylene efficiency.
Embodiment 4
MXene nanometer sheet dispersion liquid is made in 1 method of embodiment, and 7mL nanometer sheet dispersion liquid is taken to be diluted to 150mL, and 5g tetrachloro is added
Change titanium, 15mL ethylene glycol, 1mL hydrochloric acid obtains solution A；Take chloroplatinic acid (2wt%/TiO2) be dissolved in 50mL deionized water obtain it is molten
Liquid B, solution B is slowly added in solution A, and 2mL10% PVA is added, and 3 h of hybrid reaction at 25 DEG C obtains stable colloidal sol.
40g colloidal sol is taken to be laid in culture dish, at 75 DEG C, dry 48h, obtains solid under the conditions of 40%RH.Solid is placed in Muffle furnace
In, heating rate is 0.5 DEG C/min, is sintered 3h under the conditions of 450 DEG C of temperature, and Pt-TiO is made2Catalyst.Obtained catalyst
CO is taken off at 150 DEG C or more, NOx efficiency can be used for purifying vehicle exhaust up to 90% or more.
Gas is shown in Fig. 1 in catalytic inner transmission.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.It is all in essence of the invention
Within mind and principle, any modification, equivalent substitution, improvement and etc. done be should all be included in the protection scope of the present invention.This
The technical scope of item invention is not limited to the contents of the specification, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (11)
1. a kind of method that stratiform MXene doping prepares catalyst, it is characterised in that: the catalyst has two and three dimensions group
Assembling structure；The preparation method comprises the following steps:
(1) preparation of MXene solution: by Ti3AlC2Particle, which is placed in 40%HF at 25 DEG C, stirs 2h, is centrifugated, dry,
It disperses obtained powder in deionized water and obtains dispersion liquid, the concentration of the dispersion liquid is 2mg/mL, and dispersion liquid is being flowed
Ultrasound 2h under dynamic argon gas, centrifugation, takes supernatant liquor to obtain MXene solution；
(2) MXene solution is taken, deionized water is added in 1 ~ 2h of ultrasound, and titanium precursors, dispersing agent, 1 ~ 4h of acid stirring obtain solution A；
(3) preparation of catalyst active component: metal salt is dissolved in deionized water and obtains solution B；
(4) solution B is added in solution A, a certain amount of adhesive is added in stirring, and 1 ~ 4h of stirring obtains solution C；
(5) solution C is taken to be dried to obtain solid D；
(6) sintering obtains catalyst.
2. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the titanium precursors in (2) are TiOSO4, TiCl4, Ti (SO4)2One or both of.
3. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the dispersing agent in (2) is one of ethylene glycol, glycerol, lauryl sodium sulfate.
4. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the acid in (2) is one of oxalic acid, citric acid, hydrochloric acid and nitric acid.
5. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the metal salt in (3) is the soluble metallic salt of V/W or Ce/Mn or Nb/Pd or P.
6. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the adhesive in (4) is one of polyethylene glycol, polyvinyl alcohol, methylcellulose.
7. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the titanium precursors in (2) and step (4), dispersing agent, acid, the molar ratio of adhesive are 1 ︰, 1 ~ 6 ︰, 1 ~ 4 ︰ 1 ~ 4.
8. the method that a kind of stratiform MXene according to claim 1 prepares doped catalyst, it is characterised in that: the step
Suddenly in (2) quality of MXene with TiO2Quality be calculated as 1 ~ 6wt.%, the load capacity of metal salt is in step (3) with TiO2Quality
It is calculated as 1 ~ 10wt.%.
9. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly the drying process in (5) is that solution C is laid in culture dish, drying temperature be 20 ~ 80 DEG C, to dry humidity be 40 ~ 80%
Dry 12 ~ 48h under the conditions of RH.
10. the method that a kind of stratiform MXene doping according to claim 1 prepares catalyst, it is characterised in that: the step
Suddenly under the conditions of the sintering temperature in (6) is 300 ~ 700 DEG C, heating rate is 0.5 ~ 10 DEG C/min, solid D is placed in Muffle furnace
It is sintered 2 ~ 4h.
11. a kind of stratiform MXene doping such as of any of claims 1-10 prepares catalyst and in gas purification
In application, which is characterized in that the catalyst for low temperature nitrogen oxides, VOCs remove.
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