CN101733090A - Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof - Google Patents
Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof Download PDFInfo
- Publication number
- CN101733090A CN101733090A CN200910219526A CN200910219526A CN101733090A CN 101733090 A CN101733090 A CN 101733090A CN 200910219526 A CN200910219526 A CN 200910219526A CN 200910219526 A CN200910219526 A CN 200910219526A CN 101733090 A CN101733090 A CN 101733090A
- Authority
- CN
- China
- Prior art keywords
- solution
- carrier
- doped
- low
- catalyst
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Catalysts (AREA)
Abstract
The invention relates to a low-temperature SCR catalyst taking W-doped TiO2 as a carrier and a preparation method thereof. The invention is characterized in that the catalyst takes W-doped TiO2 as the carrier, the loading MnOX is an active component of the catalyst, wherein the mole ratio of the doped element W is 1-10% of the mole ratio of Ti element in TiO2, and the loading capacity of MnOX is 10-60%. The preparation method of the catalyst comprises the following steps: adopting a sol-gel method to prepare W-doped TiO2 gel, adopting a wet ball mill to load MnOX active component, drying, calcining, and grinding to obtain low-temperature SCR denitration catalyst. In the invention, W-doping and optimization of the preparation method are carried out on TiO2 carrier, thus improving denitration efficiency of catalyst and broadening catalytic activity temperature window.
Description
Technical field
The invention belongs to air contaminant treatment technology and environment protection catalytic material field, be specifically related to a kind of TiO that mixes with W
2Be low-temperature SCR catalyst of carrier and preparation method thereof.
Background technology
The scope and the degree of China NOx pollution in recent years are quite serious.People such as German scholar Richter reported on Nature in 2005: NO in the troposphere, area, Eastern China
2Content, having increased nearly 50%, 1997 year growth rate from 1996 to 2004 is 4%, and 2002 annual growths have reached 12%.People such as American scholar Streets report that China's nineteen ninety-five NOx total emission volumn is 1,200 ten thousand tons, and prediction is not if take control measure, will reach 26,600,000 tons to the total emission volumn of the year two thousand twenty NOx.Therefore, the NOx that eliminates as one of atmosphere pollution main source just becomes particularly important.From on July 1st, 2004, China announces and implements " thermal power plant's atmosphere pollutants emission standards ", thermal power plant's discharged nitrous oxides is required to have increased significantly, in order to satisfy the NOx emission request that government formulates, the elimination of NOx (DeNOx) technology is one of object of paying close attention to of researcher always, in numerous denitration technologies, SCR (selective catalytic reduction) technology denitration efficiency is the highest, is the research focus that removes in the NOx field.
The carrier of most of SCR catalyst adopts TiO
2Or loose structure such as zeolite, also there is the research report to use Al
2O
3, activated carbon and activated coke be as the carrier of SCR catalyst.Though it is active to prove that through actual project quality inspection these carriers have a good adaptation, owing to form simply, to sulphur and steam sensitivity, and catalyst can wear and tear by dust in flue gas, influences service life.Therefore existing SCR denitrating catalyst is improved to improve and become the problem that presses for solution in its denitration efficiency and service life.
Summary of the invention
The purpose of this invention is to provide a kind of TiO that mixes with W
2Be low-temperature SCR catalyst of carrier and preparation method thereof, the out of stock efficient of catalyst that exists with effective solution prior art is lower, the problem that service life is short.
For addressing the above problem, the technical solution adopted in the present invention is: a kind of TiO that mixes with W
2Low-temperature SCR catalyst for carrier is characterized in that: described catalyst is the TiO that mixes with W
2Be carrier, load MnO
XAs the activity of such catalysts component.
In the above-mentioned catalyst, the molal quantity of doped chemical W is TiO
21～10% of middle Ti element molal quantity, MnO
XLoad capacity be 10～60%.
Above-mentioned Preparation of catalysts method comprises the steps: successively
Step 1: absolute ethyl alcohol and butyl titanate 1: 0.4 by volume～1.2 are mixed, obtain solution A; Be 1: 0.3～0.8: 3～5 to mix again by volume with C solution, glacial acetic acid and absolute ethyl alcohol, obtain solution B, wherein the composition of C solution is that the concentration of a certain amount of ammonium metavanadate of dissolving is 50% oxalic acid solution, and the molal quantity of control W is 1～10% of a Ti element molal quantity.
Step 2: 1: 0.3 by volume～3 slowly are added drop-wise to B solution in the A solution, constantly stir, and form the colloidal sol of homogeneous transparent, and ageing is after 24～72 hours, place baking oven in 100 ℃ of dryings 24 hours, obtain W doped Ti O
2Xerogel.
Step 3: with active component MnO
XForm with manganese acetate is introduced, wherein the TiO of manganese acetate and W doping
2Xerogel is poured ball grinder in the ratio of load capacity 10～60%, wet ball grinding mixes, mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300～600 ℃ of calcinings 1～3 hour again it after drying is finished, and obtains load MnO after the grinding
XW doped Ti O
2Low-temperature SCR catalyst.
Compared with prior art, advantage of the present invention is:
1, processing step is simple to operate, and production cost reduces greatly.
2, Zhi Bei low-temperature SCR catalyst denitration efficiency height, wide, the long service life of active temperature windows have bigger specific area and higher heat endurance.
The specific embodiment
The present invention is described in detail below in conjunction with the specific embodiment.
Embodiment 1
30mL absolute ethyl alcohol and 12mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 3.04g again is that 50% oxalic acid solution 10mL, glacial acetic acid 3mL, absolute ethyl alcohol 30mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 2.68g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300 ℃ of calcinings 1 hour again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 2
30mL absolute ethyl alcohol and 12mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 3.04g again is that 50% oxalic acid solution 10mL, glacial acetic acid 3mL, absolute ethyl alcohol 30mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 16.08g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300 ℃ of calcinings 3 hours again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 3
30mL absolute ethyl alcohol and 12mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 3.04g again is that 50% oxalic acid solution 10mL, glacial acetic acid 3mL, absolute ethyl alcohol 30mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 2.68g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 500 ℃ of calcinings 1 hour again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 4
30mL absolute ethyl alcohol and 12mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 3.04g again is that 50% oxalic acid solution 10mL, glacial acetic acid 3mL, absolute ethyl alcohol 30mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 16.08g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 500 ℃ of calcinings 3 hours again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 5
30mL absolute ethyl alcohol and 36mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 91.2g again is that 50% oxalic acid solution 30mL, glacial acetic acid 24mL, absolute ethyl alcohol 90mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 2.6gg manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300 ℃ of calcinings 1 hour again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 6
30mL absolute ethyl alcohol and 36mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 91.2g again is that 50% oxalic acid solution 30mL, glacial acetic acid 24mL, absolute ethyl alcohol 90mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 16.08g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300 ℃ of calcinings 3 hours again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 7
30mL absolute ethyl alcohol and 36mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 91.2g again is that 50% oxalic acid solution 30mL, glacial acetic acid 24mL, absolute ethyl alcohol 90mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 2.68g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 500 ℃ of calcinings 1 hour again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Embodiment 8
30mL absolute ethyl alcohol and 36mL butyl titanate are obtained solution A through mixing; The concentration that to dissolve metatungstic acid amine 91.2g again is that 50% oxalic acid solution 30mL, glacial acetic acid 24mL, absolute ethyl alcohol 90mL obtain solution B through mixing; B solution slowly is added drop-wise in the A solution, constantly stirs, form the colloidal sol of homogeneous transparent, ageing is after 24～24 hours, places baking oven in 100 ℃ of dryings 24 hours, obtains W doped Ti O
2Xerogel; 16.08g manganese acetate and above-mentioned xerogel are poured in the ball grinder, and wet ball grinding mixes, and mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 500 ℃ of calcinings 3 hours again it after drying is finished, and obtains load MO after the grinding
XW doped Ti O
2The low-temperature SCR catalyst sample.
Catalyst is packed in the catalytic reactor, feed simulated flue gas, gas composition: the NO about 0.05% (intrinsic standoff ratio) (wherein contains about NO of about 5%
2), the NH of 0.05% (intrinsic standoff ratio)
3, O
2Intrinsic standoff ratio 5%, all the other are balanced gas N
2, be 12000h in air speed
-1, under the condition that reaction temperature is 150～300 ℃, NO removal efficiency 85～98%.
Claims (3)
1. TiO who mixes with W
2Low-temperature SCR catalyst for carrier is characterized in that: described catalyst is the TiO that mixes with W
2Be carrier, load MnO
XAs the activity of such catalysts component.
2. a kind of TiO that mixes with W according to claim 1
2Low-temperature SCR catalyst for carrier is characterized in that: the molal quantity of doped chemical W is TiO
21～10% of middle Ti element molal quantity, MnO
XLoad capacity be 10～60%.
3. a kind of TiO that mixes with W according to claim 1 and 2
2Low-temperature SCR catalyst for carrier is characterized in that: above-mentioned Preparation of catalysts method comprises the steps: successively
Step 1: absolute ethyl alcohol and butyl titanate 1: 0.4 by volume～1.2 are mixed, obtain solution A; Be 1: 0.3～0.8: 3～5 to mix again by volume with C solution, glacial acetic acid and absolute ethyl alcohol, obtain solution B, wherein the composition of C solution is that the concentration of a certain amount of ammonium metavanadate of dissolving is 50% oxalic acid solution, and the molal quantity of control W is 1～10% of a Ti element molal quantity;
Step 2: 1: 0.3 by volume～3 slowly are added drop-wise to B solution in the A solution, constantly stir, and form the colloidal sol of homogeneous transparent, and ageing is after 24～72 hours, place baking oven in 100 ℃ of dryings 24 hours, obtain W doped Ti O
2Xerogel;
Step 3: with active component MnO
XForm with manganese acetate is introduced, wherein the TiO of manganese acetate and W doping
2Xerogel is poured ball grinder in the ratio of load capacity 10～60%, wet ball grinding mixes, mixture places baking oven in 100 ℃ of dryings 24 hours, places Muffle furnace in 300～600 ℃ of calcinings 1～3 hour again it after drying is finished, and obtains load MnO after the grinding
XW doped Ti O
2Low-temperature SCR catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910219526 CN101733090B (en) | 2009-12-16 | 2009-12-16 | Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910219526 CN101733090B (en) | 2009-12-16 | 2009-12-16 | Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101733090A true CN101733090A (en) | 2010-06-16 |
| CN101733090B CN101733090B (en) | 2013-04-03 |
Family
ID=42457420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910219526 Expired - Fee Related CN101733090B (en) | 2009-12-16 | 2009-12-16 | Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101733090B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011013850A1 (en) * | 2009-07-30 | 2011-02-03 | The University Of Tokyo | Photocatalytic materials and process for producing the same |
| CN104014330A (en) * | 2014-06-10 | 2014-09-03 | 上海大学 | Mesoporous cerium-tungsten-aluminum composite oxide carrier based denitration catalyst and preparation method thereof |
| CN105582910A (en) * | 2016-01-20 | 2016-05-18 | 华中科技大学 | Preparation method of cooperating catalyst for demercuration and denitration |
| CN105618031A (en) * | 2016-01-05 | 2016-06-01 | 武汉理工大学 | Nanorod-like low-temperature denitration catalyst and preparation method thereof |
| CN106362733A (en) * | 2016-09-22 | 2017-02-01 | 南京理工大学 | High-temperature resistant manganite catalyst and preparation method thereof |
| CN112958164A (en) * | 2021-02-26 | 2021-06-15 | 上海大学材料基因组工程(萍乡)研究院 | Method for regulating active oxygen component on surface of catalyst carrier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021482A1 (en) * | 1995-12-13 | 1997-06-19 | Basf Aktiengesellschaft | PROCESS FOR REDUCING NOx FROM EXHAUST FUMES |
| CN101072622A (en) * | 2004-10-12 | 2007-11-14 | 约翰逊马西有限公司 | Method of decomposing nitrogen dioxide |
| CN101284238A (en) * | 2008-05-29 | 2008-10-15 | 国电环境保护研究院 | Stationary source ammine selectivity catalytic reduction nitrous oxides series catalysts |
-
2009
- 2009-12-16 CN CN 200910219526 patent/CN101733090B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997021482A1 (en) * | 1995-12-13 | 1997-06-19 | Basf Aktiengesellschaft | PROCESS FOR REDUCING NOx FROM EXHAUST FUMES |
| CN101072622A (en) * | 2004-10-12 | 2007-11-14 | 约翰逊马西有限公司 | Method of decomposing nitrogen dioxide |
| CN101284238A (en) * | 2008-05-29 | 2008-10-15 | 国电环境保护研究院 | Stationary source ammine selectivity catalytic reduction nitrous oxides series catalysts |
Non-Patent Citations (2)
| Title |
|---|
| 徐文青，等: "负载型锰氧化物催化剂催化NH3选择性还原NOx", 《中国稀土学报》 * |
| 邹旭华，等: "掺杂金属离子改性的TiO2薄膜光催化剂的研制", 《分子催化》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011013850A1 (en) * | 2009-07-30 | 2011-02-03 | The University Of Tokyo | Photocatalytic materials and process for producing the same |
| US8728973B2 (en) | 2009-07-30 | 2014-05-20 | The University Of Tokyo | Photocatalytic materials and process for producing the same |
| CN104014330A (en) * | 2014-06-10 | 2014-09-03 | 上海大学 | Mesoporous cerium-tungsten-aluminum composite oxide carrier based denitration catalyst and preparation method thereof |
| CN105618031A (en) * | 2016-01-05 | 2016-06-01 | 武汉理工大学 | Nanorod-like low-temperature denitration catalyst and preparation method thereof |
| CN105618031B (en) * | 2016-01-05 | 2018-10-23 | 武汉理工大学 | A kind of nano bar-shape low-temperature denitration catalyst and preparation method thereof |
| CN105582910A (en) * | 2016-01-20 | 2016-05-18 | 华中科技大学 | Preparation method of cooperating catalyst for demercuration and denitration |
| CN106362733A (en) * | 2016-09-22 | 2017-02-01 | 南京理工大学 | High-temperature resistant manganite catalyst and preparation method thereof |
| CN112958164A (en) * | 2021-02-26 | 2021-06-15 | 上海大学材料基因组工程(萍乡)研究院 | Method for regulating active oxygen component on surface of catalyst carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101733090B (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101721993B (en) | Low temperature SCR catalyst taking Ce-doped TiO2 as carrier and preparation method thereof | |
| CN101767003B (en) | Low-temperature SCR catalyst with V-doped TiO2 as carrier and preparation method thereof | |
| CN101733090B (en) | Low-temperature SCR catalyst taking W-doped TiO2 as carrier and preparation method thereof | |
| Lian et al. | Enhanced activity of Ti-modified V2O5/CeO2 catalyst for the selective catalytic reduction of NO x with NH3 | |
| CN101480611B (en) | Vanadium-doped titanium-base flue gas denitration catalyst material and preparation method thereof | |
| CN101396657A (en) | Denitration catalyst using titanium dioxide as raw material and preparation method thereof | |
| CN109794272B (en) | Supported phosphomolybdic heteropoly acid low-temperature SCR catalyst and preparation method thereof | |
| CN101428212B (en) | Selective catalysis reduction denitrate catalyst for composite carrier flue gas and preparation method thereof | |
| CN105879879B (en) | A kind of high sulfur resistive ultralow temperature SCR denitration and preparation method thereof | |
| CN101879452B (en) | Manganese-based low-temperature denitration catalyst and preparation method thereof | |
| CN102824922A (en) | Integrated honeycomb SCR (selective catalytic reduction) catalyst for low-temperature smoke denitration and preparation method of catalyst | |
| CN102716753A (en) | Catalyst for low-temperature selective catalytic reduction of nitric oxide and preparation method of catalyst | |
| CN101396656A (en) | Power plant flue-gas SCR denitration catalyst capable of preventing sulfur trioxide poisoning and preparation method thereof | |
| CN107649116A (en) | Cerium tin composite oxides denitrating catalyst and its preparation method and application | |
| CN112844366B (en) | Multiple poisoning resistant NH 3 -SCR catalyst and method for producing the same | |
| CN102441404A (en) | Sulfur-resistant catalytic combustion catalyst and preparation method thereof | |
| CN102416321B (en) | Preparation method of SCR (Selective Catalytic Reduction) vanadium-series catalyst used in denitration of tail gas of diesel vehicle | |
| CN111282569A (en) | Mixed synergistic enhanced low-temperature SCR denitration catalyst and preparation method thereof | |
| US8758711B2 (en) | Carrier for NOx reduction catalyst | |
| CN107185523A (en) | Preparation method of denitrating catalyst that a kind of holmium is modified and products thereof | |
| CN105664924A (en) | Denitration catalyst employing shape effect for enhancing low temperature activity, preparation method and application thereof | |
| CN109603808B (en) | Preparation method and application of zirconium pillared montmorillonite-loaded Ce-Nb composite catalyst | |
| CN104741142A (en) | Preparation method and application of Fe-ZSM-5 Zr and Sr doped compound catalyst | |
| CN106902839B (en) | Mn-Fe-Al-Si low-temperature SCR catalyst and preparation method and application thereof | |
| CN103990451A (en) | Simple preparation method of efficient cerium tungsten oxide catalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20151216 |
|
| EXPY | Termination of patent right or utility model |