CN103933971A - Low-temperature denitration catalyst as well as preparation method and application thereof - Google Patents
Low-temperature denitration catalyst as well as preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a low-temperature denitration catalyst as well as a preparation method and application thereof. Cordierite honeycomb ceramics are taken as a first carrier of the low-temperature denitration catalyst, and activated titanium dioxide is taken as a second carrier, and the activated components of manganite and auxiliary cerium oxide are loaded. The catalyst comprises the following composition in percentage by weight: TiO2 accounts for 1.7-15.0% of the cordierite honeycomb ceramic carrier, and manganese cerium oxide accounts for 0.64-2.00% of the cordierite honeycomb ceramic carrier, wherein the mass ratio of cerium oxide to manganese oxide is (0-2.1):1. The low-temperature denitration catalyst has the advantages of simple preparation technology, low cost, high low-temperature activity and large-scale industrialization.
Description
Affiliated field
The present invention relates to a kind of low temperature and remove flue gas NO
xcatalyst and preparation method and application.
Background technology
Nitrogen oxide (NO
x) cause acid rain and photochemical fog, and the fine particle PM2.5 of haze generation is had to outstanding contributions, be one of main air pollutants.Especially nitrogen oxide (the NO of stationary source discharge
x) just account for more than 60%, therefore must be through controlling before its discharge.Ammine selectivity catalytic reduction technology (NH at present
3-SCR) be considered to one of the most effective technology, the SCR catalyst of industrial applications is mainly V
2o
5-WO
3/ TiO
2catalyst, it has higher denitration activity, but reaction temperature must be operated between 330～400 DEG C.For this reason, after generally SCR device need being located to boiler economizer, before air preheater, now because flue gas is not made dust removal process, inevitably there is the obstruction to catalyst duct of flue dust and other impurity and poisoning of active component shortened to catalyst life.Chinese existing most of boiler economizers, air preheater and boiler are assembled into one in addition, and this technology hot properties makes to mate and have certain difficulty with existing boiler.For fear of catalyst by SO
2stop up and poison with dust, after SCR reactor should be placed on deduster and devulcanizer (flue-gas temperature is usually less than 150 DEG C).Therefore, in the urgent need to developing the SCR catalyst of low temperature high activity.
In recent years, due to MnO
xthere is good low temperature active and obtain extensive concern.
deng (J.Phys.Chem.B, 2004,108,9927-9936; J.Catal., 2004,221,421-431) (U.S.'s physical chemistry magazine, B collects, 2004,108,9927-9936; Catalysis magazine, 2004,221,421-431) research show at 120 DEG C of low temperature, the catalytic activity order of metal oxide is Mn > Cu>=Cr>=Co > Fe>=V > > Ni.Smirniotis etc. (Angew.Chem.Int.Edit., 2001,40,2479-2482) (German applied chemistry (international version), 2001,40,2479-2482)) comparative studies TiO
2load regulation 4 cycle transition metal oxides are to NH
3no matter the impact of-SCR reactivity worth, find at 100 DEG C or at 120 DEG C MnO
x/ TiO
2catalyst all shows the highest catalytic activity.
CeO
2because its good storage oxygen performance and redox property is studied widely.CeO
2most important character is that it is under oxidation and reducing condition, by oxidation state Ce as storage oxygen source
3+and Ce
4+change reach and store and discharge the object of oxygen.The MnO of Qi etc. (J.Catal., 2003,217,434-441 (catalysis magazine, 2003,217,434-441)) research
x-CeO
2catalyst, in the time of 120 DEG C, the conversion ratio of NO approaches 100%.The MnO that Wu etc. (J.Hazard.Mater., 2007,145,488-494 (dangerous substance magazine, 2007,145,488-494)) are prepared by sol-gal process
x/ TiO
2catalyst, has also obtained good cryogenic effect, further adds Ce rear catalyst denitration activity and significantly improves again (Catal.Commun., 2008,9,2217-2220 (catalysis communication, 2008,9,2217-2220)).Due to the current catalyst of research, mostly taking powder or particle as main, although under experiment condition, show good catalytic activity, but this kind of catalyst due to effects limit such as bed pressure drop are large its commercial Application.
Summary of the invention
The object of this invention is to provide that a kind of preparation technology is simple, low cost, low temperature high activity, has catalyst for denitrating flue gas and the preparation method and application of heavy industrialization.
Cordierite honeycomb ceramic has that intensity is high, pressure drop is little and Heat stability is good and the feature such as cost is low, is widely used in the chemical industry such as catalyzed conversion and field of Environment Protection, but its specific area very little (< 1m conventionally
2/ g), make active component can fully disperse in the above, must be in cordierite surface coated carrier component.Detitanium-ore-type TiO
2have larger specific area, the materials such as sulfate radical are significantly less than other metal oxide in its surperficial stability, can protect the active component of load, therefore TiO
2be selected as the carrier component of SCR catalyst.
In view of above problem and analysis, the present invention has prepared TiO by sol-gal process
2, and loaded on the honeycomb cordierite of handling well, then the method for steeping by total immersion, in load, active component Mn and auxiliary agent Ce, obtained integral catalyzer.
The present invention is used for the catalyst of low-temperature denitration of flue gas taking cordierite honeycomb ceramic as the first carrier, and active titanic dioxide is Second support, load active component Mn oxide and auxiliary agent cerium oxide, and catalyst weight percentage consists of: TiO
2for the 1.7-15.0% of cordierite honeycomb ceramic carrier, manganese cerium oxide is cordierite honeycomb ceramic carrier 0.64-2.00%, wherein cerium oxide: Mn oxide mass ratio=(0-2.1): 1.
Preparation method of the present invention comprises the steps:
(1) cordierite carrier pretreatment:
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 1-6h, is washed to neutrality, and room temperature is placed 2-4h, 110-150 DEG C of dry 6-12h, 400-600 DEG C of roasting 3-6h;
(2) TiO
2the preparation of coating:
Butyl titanate and ethanol are mixed to 1-3h under rapid stirring, slowly add again in the mixed solution of the ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 1-3h, room temperature leaves standstill 4-8h, obtain colloidal sol, wherein, the volume ratio of above-mentioned substance is butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:(3.2-6.5): (0.1-0.2): (0.1-0.7): (0.05-0.2), for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount;
Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, make colloidal sol submergence carrier at least completely, after 10-40min, take out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 0.5-2h, dry 8-24h for 100-120 DEG C, 350-450 DEG C of roasting 4-8h, obtaining load has TiO
2the carrier of coating;
(3) Kaolinite Preparation of Catalyst:
Press cerium oxide: manganese oxide mass ratio=(0-2.1): 1, cerous nitrate and manganese acetate are mixed with to the aqueous solution, wherein manganese acetate: water=1g:12-16ml; Load is had to TiO
2the carrier impregnation of coating is taken out after 10-40min in the aqueous solution that contains cerous nitrate and manganese acetate, blows the liquid remaining in cordierite duct, and room temperature is placed 0.5-2h, and in 100-120 DEG C of oven dry 8-24h, 300-400 DEG C of roasting 3-6h, obtains catalyst.
The prepared catalyst of the present invention carries out denitrating flue gas reaction in following condition:
With fixed bed reactors, reaction temperature is controlled at 80-145 DEG C, and reaction pressure is normal pressure, and reaction volume air speed is controlled at 1000h
-1～18000h
-1.
Tool of the present invention has the following advantages:
1.TiO
2, active component and auxiliary agent be combined more firm, incrust with cordierite.
2. the denitration activity of catalyst is relatively good, especially at low temperatures.
3. preparation technology is fairly simple.
4. preparation cost is lower.
Detailed description of the invention
Embodiment 1
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 1h, is washed to neutrality, and room temperature is placed 2h, 110 DEG C of dry 6h, and 400 DEG C of roasting 3h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 1h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 1h, room temperature leaves standstill 4h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:3.2:0.1:0.1:0.05, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 10min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 1h, dries 8h for 100 DEG C, after 450 DEG C of roasting 4h, weigh, and TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 1.73%.Cated load cordierite carrier be impregnated in the 70ml aqueous solution that contains 5.8824g manganese acetate, after 10min, take out, blow the liquid remaining in cordierite duct, place 0.5h in room temperature, dry 12h for 100 DEG C, after 300 DEG C of roasting 6h, making active component Mn oxide content is 0.64% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 1.73% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 80 DEG C, and air speed is 1000h
-1time, the conversion ratio of NO is 82%.
Embodiment 2
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 2h, is washed to neutrality, and room temperature is placed 3h, 120 DEG C of dry 8h, and 500 DEG C of roasting 4h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 2h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 2h, room temperature leaves standstill 6h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:4:0.15:0.2:0.1, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 20min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 1h, dries 8h for 110 DEG C, after 450 DEG C of roasting 6h, weigh, and TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 2.08%.Cated load cordierite carrier be impregnated in the 75ml aqueous solution that contains 5.8824g manganese acetate and 0.5211g cerous nitrate, after 20min, take out, blow the liquid remaining in cordierite duct, place 1h in room temperature, dry 12h for 110 DEG C, after 350 DEG C of roasting 5h, making Mn oxide content is 0.65%, cerium oxide content is 0.17% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 2.02% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 100 DEG C, and air speed is 3000h
-1time, the conversion ratio of NO is 87%.
Embodiment 3
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 3h, is washed to neutrality, and room temperature is placed 4h, 130 DEG C of dry 10h, and 600 DEG C of roasting 5h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 3h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 3h, room temperature leaves standstill 8h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:5:0.2:0.3:0.2, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 30min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 1.5h, dries 8h, 450 DEG C of roasting 8h for 120 DEG C.Repeat above step, weigh after applying twice, TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 4.13%.Cated load cordierite carrier be impregnated in the 80ml aqueous solution that contains 5.8824g manganese acetate and 1.0422g cerous nitrate, after 30min, take out, blow the liquid remaining in cordierite duct, place 2h in room temperature, dry 15h for 120 DEG C, after 400 DEG C of roasting 4h, making Mn oxide content is 0.61%, cerium oxide content is 0.29% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 4.13% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 120 DEG C, and air speed is 6000h
-1time, the conversion ratio of NO is 94%.
Embodiment 4
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 4h, is washed to neutrality, and room temperature is placed 2h, 140 DEG C of dry 6h, and 400 DEG C of roasting 6h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 1h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 2h, room temperature leaves standstill 4h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:5:0.1:0.4:0.05, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 40min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 2h, dries 12h, 450 DEG C of roasting 4h for 110 DEG C.Repeat above step, weigh after applying three times, TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 6.02%.Cated load cordierite carrier be impregnated in the 85ml aqueous solution that contains 5.8824g manganese acetate and 1.5633g cerous nitrate, after 40min, take out, blow the liquid remaining in cordierite duct, place 2h in room temperature, dry 12h for 110 DEG C, after 300 DEG C of roasting 6h, making Mn oxide content is 0.59%, cerium oxide content is 0.44% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 6.02% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 145 DEG C, and air speed is 9000h
-1time, the conversion ratio of NO is 95%.
Embodiment 5
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 5h, is washed to neutrality, and room temperature is placed 3h, 150 DEG C of dry 6h, and 500 DEG C of roasting 4h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 1h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 3h, room temperature leaves standstill 6h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:6.5:0.15:0.5:0.05, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 10min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 0.5h, dries 112h, 400 DEG C of roasting 6h for 110 DEG C.Repeat above step, weigh after applying four times, TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 8.07%.Cated load cordierite carrier be impregnated in the 90ml aqueous solution that contains 5.8824g manganese acetate and 2.0844g cerous nitrate, after 10min, take out, blow the liquid remaining in cordierite duct, place 0.5h in room temperature, dry 18h for 110 DEG C, after 350 DEG C of roasting 5h, making Mn oxide content is 0.60%, cerium oxide content is 0.49% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 8.07% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 80 DEG C, and air speed is 12000h
-1time, the conversion ratio of NO is 65%.
Embodiment 6
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 6h, is washed to neutrality, and room temperature is placed 4h, 110 DEG C of dry 12h, and 600 DEG C of roasting 3h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 2h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 3h, room temperature leaves standstill 8h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:4.5:0.2:0.6:0.1, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 20min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 1h, dries 12h, 450 DEG C of roasting 4h for 120 DEG C.Repeat above step, weigh after applying twice, TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 5.03%.Cated load cordierite carrier be impregnated in the 80ml aqueous solution that contains 5.8824g manganese acetate and 4.1688g cerous nitrate, after 20min, take out, blow the liquid remaining in cordierite duct, place 1h in room temperature, dry 10h for 120 DEG C, after 400 DEG C of roasting 3h, make manganese, oxide content is 0.58%, and cerium oxide content is 0.82% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 5.03% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 120 DEG C, and air speed is 15000h
-1time, the conversion ratio of NO is 78%.
Embodiment 7
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 2h, is washed to neutrality, and room temperature is placed 3h, 120 DEG C of dry 10h, and 400 DEG C of roasting 6h, weigh after cooling for subsequent use.A certain amount of butyl titanate and ethanol are mixed to 3h under rapid stirring, more slowly add the mixed solution of a certain amount of ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 3h, room temperature leaves standstill 6h, obtains vitreosol.Wherein, the volume ratio of above-mentioned substance is, butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:5.5:0.1:0.7:0.1, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount.Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, after 30min, takes out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 1h, dries 24h, 400 DEG C of roasting 6h for 100 DEG C.Repeat above step, weigh after applying three times, TiO
2upper carrying capacity (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 7.19%.Cated load cordierite carrier be impregnated in the 80ml aqueous solution that contains 5.8824g manganese acetate and 8.3376g cerous nitrate, after 30min, take out, blow the liquid remaining in cordierite duct, place 1h in room temperature, dry 12h for 110 DEG C, after 400 DEG C of roasting 5h, making Mn oxide content is 0.60%, cerium oxide content is 1.26% (with respect to the initial mass of cordierite honeycomb ceramic carrier), TiO
2content (with respect to the initial mass of cordierite honeycomb ceramic carrier) is 7.19% integral catalyzer.Consist of 500ppmNO at simulated flue gas, 500ppmNH
3, 5.0%O
2, N
2for balancer.Controlling reaction temperature is 145 DEG C, and air speed is 18000h
-1time, the conversion ratio of NO is 81%.
Claims (3)
1. a low-temperature denitration catalyst, is characterized in that catalyst is taking cordierite honeycomb ceramic as the first carrier, and active titanic dioxide is Second support, load active component Mn oxide and auxiliary agent cerium oxide, and catalyst weight percentage consists of: TiO
2for the 1.7-15.0% of cordierite honeycomb ceramic carrier, manganese cerium oxide is cordierite honeycomb ceramic carrier 0.64-2.00%, wherein cerium oxide: Mn oxide mass ratio=0-2.1:1.
2. the preparation method of a kind of low-temperature denitration catalyst as claimed in claim 1, is characterized in that comprising the steps:
(1) cordierite carrier pretreatment:
The cordierite of well cutting is put into and contained 25wt% ammoniacal liquor, and soak at room temperature 1-6h, is washed to neutrality, and room temperature is placed 2-4h, 110-150 DEG C of dry 6-12h, 400-600 DEG C of roasting 3-6h;
(2) TiO
2the preparation of coating:
Butyl titanate and ethanol are mixed to 1-3h under rapid stirring, slowly add again in the mixed solution of the ethanol, glacial acetic acid, hydrochloric acid and the water that have mixed, continue to stir after 1-3h, room temperature leaves standstill 4-8h, obtain colloidal sol, wherein, the volume ratio of above-mentioned substance is butyl titanate: ethanol: water: glacial acetic acid: hydrochloric acid=1:3.2-6.5:0.1-0.2:0.1-0.7:0.05-0.2, for the first time ethanol consumption and for the second time ethanol consumption be 1/2 of ethanol total amount;
Pretreated cordierite honeycomb ceramic carrier is immersed in prepared colloidal sol, make colloidal sol submergence carrier at least completely, after 10-40min, take out, blow the colloidal sol remaining in cordierite duct, room temperature is placed 0.5-2h, dry 8-24h for 100-120 DEG C, 350-450 DEG C of roasting 4-8h, obtaining load has TiO
2the carrier of coating;
(3) Kaolinite Preparation of Catalyst:
Press cerium oxide: manganese oxide mass ratio=0-2.1:1, is mixed with the aqueous solution by cerous nitrate and manganese acetate, wherein manganese acetate: water=1g:12-16ml; Load is had to TiO
2the carrier impregnation of coating is taken out after 10-40min in the aqueous solution that contains cerous nitrate and manganese acetate, blows the liquid remaining in cordierite duct, and room temperature is placed 0.5-2h, and in 100-120 DEG C of oven dry 8-24h, 300-400 DEG C of roasting 3-6h, obtains catalyst.
3. the application of a kind of low-temperature denitration catalyst as claimed in claim 1, is characterized in that comprising the steps:
Catalyst is for fixed bed reactors, and reaction temperature is controlled at 80-145 DEG C, and reaction pressure is normal pressure, and reaction volume air speed is 1000h
-1～18000 h
-1.
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| CN112958063A (en) * | 2021-02-21 | 2021-06-15 | 江苏美玛技术有限公司 | Denitration catalyst |
| CN113856676A (en) * | 2021-10-11 | 2021-12-31 | 南京兰丰环保科技有限公司 | Denitration catalyst carrier and preparation method thereof |
| CN115739074A (en) * | 2022-12-29 | 2023-03-07 | 华电青岛环保技术有限公司 | High-activity yellow smoke-eliminating denitration catalyst for gas engine and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284876A1 (en) * | 2009-05-11 | 2010-11-11 | Millennium Inorganic Chemicals, Inc. | Layered Catalyst to Improve Selectivity or Activity of Manganese Containing Vanadium-Free Mobile Catalyst |
| CN102600832A (en) * | 2012-02-28 | 2012-07-25 | 北京化工大学 | Combined catalyst for improving denitration performance and application thereof |
| CN103055848A (en) * | 2012-12-25 | 2013-04-24 | 浙江海亮环境材料有限公司 | Rare-earth doped low-temperature denitration catalyst and preparation method thereof |
-
2014
- 2014-04-23 CN CN201410165445.5A patent/CN103933971A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100284876A1 (en) * | 2009-05-11 | 2010-11-11 | Millennium Inorganic Chemicals, Inc. | Layered Catalyst to Improve Selectivity or Activity of Manganese Containing Vanadium-Free Mobile Catalyst |
| CN102600832A (en) * | 2012-02-28 | 2012-07-25 | 北京化工大学 | Combined catalyst for improving denitration performance and application thereof |
| CN103055848A (en) * | 2012-12-25 | 2013-04-24 | 浙江海亮环境材料有限公司 | Rare-earth doped low-temperature denitration catalyst and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘建东 等: "Ce对Mn/TiO2/堇青石整体低温脱硝选择性催化还原催化剂的改性", 《高等学校化学学报》 * |
| 李凯: "蜂窝状Mn-Ce/TiO2/CC脱硝催化剂的涂覆技术及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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| CN111408365A (en) * | 2020-03-30 | 2020-07-14 | 上海交通大学 | Preparation method of monolithic manganese-based catalyst for low-temperature denitration |
| CN112958063A (en) * | 2021-02-21 | 2021-06-15 | 江苏美玛技术有限公司 | Denitration catalyst |
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