CN103894185B - A kind of with TiO 2the preparation method of the SCR denitration of-ZnO complex carrier - Google Patents
A kind of with TiO 2the preparation method of the SCR denitration of-ZnO complex carrier Download PDFInfo
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- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 239000012153 distilled water Substances 0.000 claims abstract description 15
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 14
- 238000001556 precipitation Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000002243 precursor Substances 0.000 claims abstract description 11
- 150000003608 titanium Chemical class 0.000 claims abstract description 9
- 150000003751 zinc Chemical class 0.000 claims abstract description 9
- 150000000703 Cerium Chemical class 0.000 claims abstract description 8
- 150000002696 manganese Chemical class 0.000 claims abstract description 7
- 238000013019 agitation Methods 0.000 claims abstract description 3
- 238000005119 centrifugation Methods 0.000 claims abstract description 3
- 239000013049 sediment Substances 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 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 claims description 5
- 229910000349 titanium oxysulfate Inorganic materials 0.000 claims description 5
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 4
- DCKVFVYPWDKYDN-UHFFFAOYSA-L oxygen(2-);titanium(4+);sulfate Chemical compound [O-2].[Ti+4].[O-]S([O-])(=O)=O DCKVFVYPWDKYDN-UHFFFAOYSA-L 0.000 claims description 4
- 229910000348 titanium sulfate Inorganic materials 0.000 claims description 4
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 4
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 4
- 229960001763 zinc sulfate Drugs 0.000 claims description 4
- OZECDDHOAMNMQI-UHFFFAOYSA-H cerium(3+);trisulfate Chemical compound [Ce+3].[Ce+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O OZECDDHOAMNMQI-UHFFFAOYSA-H 0.000 claims description 3
- 229910000333 cerium(III) sulfate Inorganic materials 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 239000011592 zinc chloride Substances 0.000 claims description 2
- 235000005074 zinc chloride Nutrition 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 12
- 239000012159 carrier gas Substances 0.000 abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 abstract description 7
- 238000005406 washing Methods 0.000 abstract description 7
- 238000006555 catalytic reaction Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229960002163 hydrogen peroxide Drugs 0.000 description 8
- 239000004568 cement Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229940071125 manganese acetate Drugs 0.000 description 3
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- MECMQNITHCOSAF-UHFFFAOYSA-N manganese titanium Chemical compound [Ti].[Mn] MECMQNITHCOSAF-UHFFFAOYSA-N 0.000 description 2
- -1 nitrogen-containing compound Chemical class 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910004664 Cerium(III) chloride Inorganic materials 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 229910018663 Mn O Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000005354 coacervation Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 229940099607 manganese chloride Drugs 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
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- WKXHZKXPFJNBIY-UHFFFAOYSA-N titanium tungsten vanadium Chemical compound [Ti][W][V] WKXHZKXPFJNBIY-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Abstract
A kind of TiO
2the preparation method of the SCR denitration of-ZnO complex carrier belongs to environmental catalysis Material Field.It is characterized in that: titanium salt, zinc salt, manganese salt and cerium salt are joined in distilled water respectively, be placed in the water-bath magnetic agitation 0.5 ~ 1h of 60 ~ 80 DEG C, dissolve, mix, obtain precursor liquid; Be that 0.5 ~ 1.5mol/L strong base solution is added drop-wise in step precursor liquid by concentration, the water-bath being placed in 60 ~ 80 DEG C stirs, and adds the hydrogen peroxide that mass fraction is 30%, stirs 1 ~ 2h, complete to precipitation; Sediment centrifugation, washing, calcine 2 ~ 5h after drying under 450 ~ 600 DEG C of conditions.The catalyst low-temperature activity that the present invention prepares is higher, and cost is lower.At 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1under catalytic reaction condition, denitration rate can reach more than 95%.
Description
Technical field
The invention belongs to environmental catalysis Material Field, be specifically related to a kind of with TiO
2-ZnO is SCR (SCR) denitrating catalyst that complex carrier is applicable to cement kiln denitrating flue gas.
Background technology
Nitrogen oxide (NO
x) as one of the major pollutants of air, comprise N
2o, NO, NO
2, N
2o
3, N
2o
4and N
2o
5deng, its discharge can cause the problems such as acid rain, greenhouse effects and depletion of the ozone layer, has serious harm to the mankind and ecological environment.Major pollutants in cement kiln tail gas are NO
xand dust, wherein NO
xmainly come from the nitrogen in high-temperature fuel and the nitrogen-containing compound in raw material.The data display of whole nation first time Pollutant source investigation in 2007, new dry process rotary kiln NO
xaverage discharge is 1100mg/Nm
3.Therefore to the NO in cement kiln tail gas
xeffectively process, have great importance.
SCR (SCR) technology can reach higher NO
xreduction rate (85% ~ 95%) is that cement kiln removes NO
xthe most effective technology.SCR catalyst is the core of SCR technology, primarily of carrier and active component two parts composition.Current SCR catalyst is mainly with TiO
2for carrier, patent CN102921403A has reported employing infusion process and has prepared V
2o
5-WO
3/ TiO
2catalyst, active component V
2o
5with WO
3mutually working in coordination with makes this catalyst have good denitration activity.But catalyst denitration rate under 350 ~ 400 DEG C of conditions of vanadium tungsten titanium system is higher, is not suitable for the process of cement kiln tail gas.The people such as Wu adopt colloidal sol coacervation to prepare Ce doped with Mn O
x/ TiO
2catalyst, result shows that this catalyst can reach the NO of more than 80% 80 DEG C time
xdenitration rate (Catalysis Communications, 2008,9:2217-2220).Patent CN1724149 adopts coprecipitation to prepare MnOx-CeO
2/ TiO
2low-temperature SCR catalyst, and improve catalyst sulfur resistive and water-resistance by adding one or more elements such as Fe, Co, Cu, Cr, Zr, Al.Although the manganese titanium system SCR catalyst low-temperature denitration adopted at present is better active, be applicable to the vent gas treatment of cement kiln, TiO
2the cost of carrier is higher, result in the expensive of this System Catalyst product, constrains the promotion and application of manganese titanium system SCR catalyst in cement tail gas denitration field.
Summary of the invention
For above-mentioned deficiency, the object of this invention is to provide a kind of cost lower and there is the TiO of good low temperature denitration activity
2the preparation method of-ZnO complex carrier SCR denitration.
The present invention is achieved in that a kind of with TiO
2the preparation method of the SCR denitration of-ZnO complex carrier, comprises following key step: prepared by (1) precursor liquid; (2) precipitation reaction; (3) precipitate and separate and drying; (4) calcine.
A kind of TiO
2the preparation method of the SCR denitration of-ZnO complex carrier, is characterized in that with TiO
2with the complex carrier of ZnO as catalyst, with MnO
xand CeO
2for active component.Realized by following concrete scheme:
(1) precursor liquid preparation
Titanium salt, zinc salt, manganese salt and cerium salt joined in 200 ~ 350mL distilled water respectively, is placed in the water-bath magnetic agitation 0.5 ~ 1h of 60 ~ 80 DEG C, dissolve, mix, obtain precursor liquid.In precursor liquid, the concentration of titanium salt is 0.1 ~ 0.5mol/L, and the concentration of zinc salt is 0.1 ~ 0.5mol/L, and the concentration of manganese salt is 0.08 ~ 0.8mol/L, and the concentration of cerium salt is 0.01 ~ 0.1mol/L;
(2) be that 0.5 ~ 1.5mol/L strong base solution is added drop-wise in the precursor liquid that step (1) obtains by concentration, the water-bath being placed in 60 ~ 80 DEG C stirs, and adds the hydrogen peroxide that mass fraction is 30%, stirs 1 ~ 2h, to precipitation completely.Wherein, the mol ratio of slaine (titanium salt, zinc salt, manganese salt and cerium salt), highly basic and hydrogen peroxide is: slaine: highly basic: hydrogen peroxide=1:2.5 ~ 3.5:0.3 ~ 1.5;
(3) the sediment centrifugation of step (2), and with distilled water and absolute ethanol washing 2 ~ 3 times, be placed in drying box 70 ~ 100 DEG C of drying 8 ~ 12h;
(4) by dried for step (3) sample grinding, under 450 ~ 600 DEG C of conditions, 2 ~ 5h is calcined.
Wherein, titanium salt described in above-mentioned steps is any one in titanyl sulfate, titanium sulfate, described zinc salt is any one in zinc nitrate, zinc sulfate, zinc chloride, described cerium salt is any one in cerous chlorate, cerous nitrate, ammonium ceric nitrate or cerous sulfate, and described highly basic is any one in NaOH or potassium hydroxide.
Advantage of the present invention is: ZnO is a kind of common metal oxide, and have the advantages such as activity is high, even aperture distribution, excellent adsorption, its lower cost is a kind of desirable carrier material.Adopt TiO
2be complex carrier with ZnO, make use of TiO
2specific area is large, acidic site distribution is abundant and ZnO active high, even aperture distribution, excellent adsorption, lower-cost advantage, the TiO prepared
2-ZnO complex carrier denitrating catalyst low temperature active is higher, and cost is lower.At 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1under catalytic reaction condition, denitration rate can reach more than 95%.
Accompanying drawing explanation
Fig. 1 is MnO
x-CeO
2/ TiO
2the NO of-ZnO complex carrier SCR catalyst
xdenitration rate figure.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the invention will be further described, but protection scope of the present invention is not limited only to following embodiment.
In following examples with TiO
2-ZnO is the NO of complex carrier SCR catalyst
xdenitration rate is shown in Fig. 1.
Embodiment one
A kind of with TiO
2-ZnO is that the preparation of the SCR denitration of complex carrier comprises the following steps:
Join in 200mL distilled water by 14.40g titanyl sulfate, 2.97g zinc nitrate, 9.80g manganese acetate, 3.04g cerous nitrate, 60 DEG C of water bath condition lower magnetic forces stir 0.5h; Being 1mol/L by 250mL(concentration) sodium hydroxide solution is added drop-wise in above-mentioned solution, and drips the hydrogenperoxide steam generator 50mL of 30% in solution, continue to stir 1h until be fully formed precipitation; Isolated precipitation is used respectively distilled water and absolute ethanol washing 2 times, be placed in evaporating dish, put into drying box 70 DEG C of dry 12h.Dried sample is ground, at 450 DEG C, calcines 4h.
Denitration rate test condition: 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1.With this understanding, the denitration rate of catalyst is up to 99%.
Embodiment two
A kind of with TiO
2-ZnO is that the preparation of the SCR denitration of complex carrier comprises the following steps:
Join in 250mL distilled water by 11.20g titanyl sulfate, 8.92g zinc nitrate, 12.25g manganese acetate, 3.47g cerous nitrate, 60 DEG C of water bath condition lower magnetic forces stir 0.5h; Being 0.5mol/L by 500mL(concentration) sodium hydroxide solution is added drop-wise in above-mentioned solution, and drips the hydrogenperoxide steam generator 50mL of 30% in solution, continue to stir 1h until be fully formed precipitation; Isolated precipitation is used respectively distilled water and absolute ethanol washing 2 times, be placed in evaporating dish, put into drying box 70 DEG C of dry 12h.Dried sample is ground, at 450 DEG C, calcines 4h.
Denitration rate test condition: 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1.With this understanding, the denitration rate of catalyst is up to 98%.
Embodiment three
A kind of with TiO
2-ZnO is that the preparation of the SCR denitration of complex carrier comprises the following steps:
Join in 300mL distilled water by 9.60g titanyl sulfate, 11.90g zinc nitrate, 20.01g manganese nitrate, 2.98g cerous chloride, 80 DEG C of water bath condition lower magnetic forces stir 0.5h; Being 1mol/L by 250mL(concentration) potassium hydroxide solution is added drop-wise in above-mentioned solution, and drips the hydrogenperoxide steam generator 60mL of 30% in solution, continue to stir 1.5h until be fully formed precipitation; Isolated precipitation is used respectively distilled water and absolute ethanol washing 3 times, be placed in evaporating dish, put into drying box 90 DEG C of dry 10h.Dried sample is ground, at 550 DEG C, calcines 3h.
Denitration rate test condition: 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1.With this understanding, the denitration rate of catalyst is up to 98%.
Embodiment four
A kind of with TiO
2-ZnO is that the preparation of the SCR denitration of complex carrier comprises the following steps:
Join in 300mL distilled water by 20.13g titanium sulfate, 8.05g zinc sulfate, 19.60g manganese acetate, 4.34g cerous nitrate, 80 DEG C of water bath condition lower magnetic forces stir 0.5h; Being 1mol/L by 350mL(concentration) potassium hydroxide solution is added drop-wise in above-mentioned solution, and drips the hydrogenperoxide steam generator 60mL of 30% in solution, continue to stir 2h until be fully formed precipitation; Isolated precipitation is used respectively distilled water and absolute ethanol washing 3 times, be placed in evaporating dish, put into drying box 100 DEG C of dry 8h.Dried sample is ground, at 600 DEG C, calcines 2h.
Denitration rate test condition: 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1.With this understanding, the denitration rate of catalyst is up to 98%.
Embodiment five
A kind of with TiO
2-ZnO is that the preparation of the SCR denitration of complex carrier comprises the following steps:
Join in 350mL distilled water by 16.08g titanium sulfate, 9.66g zinc sulfate, 10.07g manganese chloride, 4.04g cerous sulfate, 70 DEG C of water bath condition lower magnetic forces stir 1h; Being 1.5mol/L by 200mL(concentration) potassium hydroxide solution is added drop-wise in above-mentioned solution, and drips the hydrogenperoxide steam generator 65mL of 30% in solution, continue to stir 2h until be fully formed precipitation; Isolated precipitation is used respectively distilled water and absolute ethanol washing 3 times, be placed in evaporating dish, put into drying box 100 DEG C of dry 8h.Dried sample is ground, at 600 DEG C, calcines 2h.
Denitration rate test condition: 1000ppmNO, 1000ppmNH
3, 5%O
2, N
2for carrier gas, gas flow rate is 2000mL/min, and air speed is 27000h
-1.With this understanding, the denitration rate of catalyst is up to 95%.
Claims (5)
1. one kind with TiO
2the preparation method of the SCR denitration of-ZnO complex carrier, is characterized in that with TiO
2with the complex carrier of ZnO as catalyst, with MnO
xand CeO
2for active component; Realized by following concrete scheme:
(1) precursor liquid preparation
Titanium salt, zinc salt, manganese salt and cerium salt joined in distilled water respectively, is placed in the water-bath magnetic agitation 0.5 ~ 1h of 60 ~ 80 DEG C, dissolve, mix, obtain precursor liquid; In precursor liquid, the concentration of titanium salt is 0.1 ~ 0.5mol/L, and the concentration of zinc salt is 0.1 ~ 0.5mol/L, and the concentration of manganese salt is 0.08 ~ 0.8mol/L, and the concentration of cerium salt is 0.01 ~ 0.1mol/L;
(2) be that 0.5 ~ 1.5mol/L strong base solution is added drop-wise in the precursor liquid that step (1) obtains by concentration, the water-bath being placed in 60 ~ 80 DEG C stirs, and adds the hydrogen peroxide that mass fraction is 30%, stirs 1 ~ 2h, to precipitation completely; Wherein, the mol ratio of slaine and above-mentioned titanium salt, zinc salt, manganese salt and cerium salt, highly basic and hydrogen peroxide is: slaine: highly basic: hydrogen peroxide=1:2.5 ~ 3.5:0.3 ~ 1.5;
(3) the sediment centrifugation of step (2), and wash 2 ~ 3 times respectively with distilled water and absolute ethyl alcohol, be placed in drying box 70 ~ 100 DEG C of drying 8 ~ 12h;
(4) by dried for step (3) sample grinding, under 450 ~ 600 DEG C of conditions, 2 ~ 5h is calcined.
2. method according to claim 1, wherein said titanium salt is any one in titanyl sulfate, titanium sulfate.
3. method according to claim 1, wherein said zinc salt is any one in zinc nitrate, zinc sulfate, zinc chloride.
4. method according to claim 1, wherein said cerium salt is any one in cerous chlorate, cerous nitrate, ammonium ceric nitrate or cerous sulfate.
5. method according to claim 1, wherein said highly basic is any one in NaOH or potassium hydroxide.
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| CN106732538B (en) * | 2016-11-23 | 2019-07-16 | 江苏省环境科学研究院 | A kind of composite catalyst and the preparation method and application thereof |
| CN107376898A (en) * | 2017-06-27 | 2017-11-24 | 上海理工大学 | A kind of SCR denitration and preparation method thereof |
| CN109423094B (en) * | 2017-08-30 | 2021-07-20 | 深圳先进技术研究院 | Charge transfer type automatic oxidation reduction nano material, preparation method thereof and antifouling and antibacterial coating |
| CN108686670A (en) * | 2018-05-29 | 2018-10-23 | 吉林省电力科学研究院有限公司 | A kind of anti-H for denitrating flue gas2O,SO2, heavy metal and dust poison multicomponent catalyst |
| CN108686675A (en) * | 2018-05-29 | 2018-10-23 | 吉林省电力科学研究院有限公司 | A kind of anti-H2O,SO2, dust and alkali metal detoxification evil denitrating flue gas multicomponent catalyst |
| CN108607574A (en) * | 2018-05-29 | 2018-10-02 | 吉林省电力科学研究院有限公司 | A kind of anti-H2O、SO2With the catalyst for denitrating flue gas and preparation method thereof of heavy metal detoxification evil |
| CN108855053B (en) * | 2018-07-06 | 2022-04-12 | 华侨大学 | Preparation method and application of oxygen-enriched Mn-based low-temperature denitration catalyst |
| CN114368773B (en) * | 2021-12-09 | 2023-06-02 | 江西师范大学 | Method for preparing cerium oxide nano particles by two-step method |
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