CN101530795A - Catalyst for catalyzing and oxidizing nitrogen oxide and preparation method thereof - Google Patents
Catalyst for catalyzing and oxidizing nitrogen oxide and preparation method thereof Download PDFInfo
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- CN101530795A CN101530795A CN200910094393A CN200910094393A CN101530795A CN 101530795 A CN101530795 A CN 101530795A CN 200910094393 A CN200910094393 A CN 200910094393A CN 200910094393 A CN200910094393 A CN 200910094393A CN 101530795 A CN101530795 A CN 101530795A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title claims description 89
- 230000001590 oxidative effect Effects 0.000 title abstract description 3
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 230000003647 oxidation Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000000967 suction filtration Methods 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 7
- 229940071125 manganese acetate Drugs 0.000 claims description 7
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 12
- 238000006243 chemical reaction Methods 0.000 abstract description 12
- 238000000746 purification Methods 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 9
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 abstract description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000010795 gaseous waste Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 6
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000003595 mist Substances 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000010531 catalytic reduction reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229940117975 chromium trioxide Drugs 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N chromium trioxide Inorganic materials O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- GAMDZJFZMJECOS-UHFFFAOYSA-N chromium(6+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Cr+6] GAMDZJFZMJECOS-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229960004643 cupric oxide Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Catalysts (AREA)
Abstract
The invention discloses a catalyst for catalyzing and oxidizing NO under the condition of low temperature plasma and a preparation method thereof which coordinates with plasma technology to realize catalytic oxidation of NO; oxidization activity of the catalyst is outstanding in that 95-99% of NO can be transformed into N2O5 at the temperature of 25-150 DEG C in case of coordination of low temperature of plasma; ammonium nitrate product is obtained by absorption of ammonia water, thus realizing resource utilization of NO; the catalyst is mainly used for depriving NOx in industrial gaseous waste discharged by fixed sources such as a thermal power plant, an oil refinery and a chemical plant, belonging to the technical field of atmospheric pollution purification with the catalyst oxidation technology applied. The method overcomes the defect that the traditional wet method causes reunion; meanwhile, the reaction has the advantages that no solvent is needed, the yield is high and the reaction conditions are easy to be controlled, therefore, the method is easy and feasible in preparing nano-level catalyst. A plurality of experiments indicate that at the temperature of 25-150 DEG C and the airspeed of 10000-60000h<-1>, purification efficiency of NO reaches 95-99%, thus achieving resource treatment of NO.
Description
Technical field
The present invention relates to a kind of under the low-temperature plasma concrete conditions in the establishment of a specific crime Preparation of catalysts method of deep oxidation nitrogen oxide, this catalyst is mainly used in the NOx in the industrial waste gases that stationary source discharged such as removing steam power plant, smeltery, oil plant, chemical plant, and belongs to the catalytic oxidation technology and is applied to atmosphere pollution purification techniques field.
Background technology
Nitrogen oxide is to cause acid rain, and photochemical fog etc. destroy the main atmosphere pollution of ball ecological environment and infringement health.It mainly comes high-temperature combustion boiler, nitric acid or the nitric acid saltworks tail gas and the vehicle exhaust of spontaneous combustion coal and fuel oil, and main nitrogen oxide exists with the form of nitric oxide (NO) in the tail gas.Pollution how to eliminate nitrogen oxide is problem that attracts people's attention very much in the environmental protection.
Many at present employing selective catalytic reductions carry out purified treatment to the stationary source nitrogen oxides from exhaust gas, and this method is stable, and selectivity is good, the denitration efficiency height.A kind of catalyst of depriving nitrogen oxide under low temperature through reduction is disclosed among the Chinese patent CN1660492A, this catalyst is with iron oxide (50～80%, mass ratio), manganese dioxide or aluminium oxide or chromium trioxide (3～30%, mass ratio), cupric oxide (0.5～10%, mass ratio) is a main active component, belonging to O composite metallic oxide catalyst, in the time of 140 ℃ is that reducing agent can make the NO of 1500ppm reduce 93% with ammonia.Disclosing a kind of among the Chinese patent CN1413765A is that reducing agent is the catalyst of nitrogen with the nitrous oxides selectivity catalytic reduction with ammonia, this catalyst is carrier with the aluminium oxide, main active component is copper (0.5～30%, in the mass ratio of metal) and manganese (0.1～10%, in metal).This catalyst is under 150～300 ℃ of reaction temperatures, and the NO transformation efficiency reaches 67～98%.Though selective catalytic reduction efficient is higher, equipment investment is big, and also there is the problem such as anticorrosion, anti-leak of ammonia simultaneously in the operating cost height.
Absorption process denitration technology maturation, process route is succinct, and equipment operation is stable, reached the industrial applications degree, but because the main component of nitrogen oxides of exhaust gas is the extremely low NO of solubility, cause in the absorption process gas resistance of liquid mass transfer bigger, make that the purification efficiency of this technology is lower.For improving absorption cleaning efficient, the researcher adopts the method for catalytic oxidation that NO is oxidized to the bigger NO of solubility
2,, improve purification efficiency, but be subjected to NO to promote absorption
2Liquid phase absorbs the restriction of chemical reaction, and its highest purification efficiency also has only 60～70%.
For this reason, the scientific research personnel begins one's study lower temperature plasma technology and catalytic oxidation technology is combined, the a large amount of as lively as a cricket high activity species that utilize the plasma space enrichment are (as ion, electronics, the atom and molecule of excitation state and free radical etc.), the concerted catalysis oxidation reaction reduces the activation energy that reacts, and NO degree of depth Catalytic Oxygen is changed into the N of easier absorption
2O
5, can get ammonium nitrate through the ammoniacal liquor absorption, purification efficiency can be increased to more than 90%, has realized exhaust-gas resource simultaneously.Therefore, it is very necessary to develop a kind of coupling catalyst that can efficiently catalyzing and oxidizing NO under the low-temperature plasma concrete conditions in the establishment of a specific crime, has important practical significance.
Summary of the invention
The object of the present invention is to provide a kind of under the low-temperature plasma concrete conditions in the establishment of a specific crime Catalysts and its preparation method of catalytic oxidation NO, the coordinated with plasma technology realizes the catalytic oxidation of NO, this catalyst oxidation is active outstanding, at 25～150 ℃, under the low-temperature plasma synergistic condition, 95～99% NO can be changed into N
2O
5, N
2O
5After ammoniacal liquor absorbs, get ammonium nitrate products, realized the recycling of NO.
Method for preparing catalyst of the present invention comprises the steps:
1, manganese acetate and potassium permanganate are mixed by a certain percentage places mortar (mol ratio MnAC:KMnO
4=0.2～1);
2, mixture is mixed, fully ground 30～40 minutes;
3, mortar was placed in 60～80 ℃ of vacuum drying chambers constant temperature 48～72 hours, vacuum 900～4000Pa;
4, product spends deionised water 3～4 times, suction filtration; Use absolute ethanol washing again 2～3 times, suction filtration;
5, at last 60～80 ℃ of following vacuum drying 12～24 hours, vacuum 900～4000Pa gets the black manganese oxide particle.
This method has overcome the shortcoming that there is agglomeration in conventional wet, and reaction simultaneously has a solvent of need not, and productive rate height, reaction condition be advantage such as grasp easily, is a kind of method for preparing nm-class catalyst of simple possible.At 25～150 ℃, air speed is 10000～60000h
-1Under the condition, through repeatedly experiment, the purification efficiency of NO reaches 95～99%, has accomplished the NO recycling treatment.
The specific embodiment
Further specify flesh and blood of the present invention with example below, but content of the present invention is not limited to this.
Embodiment 1:
With manganese acetate and potassium permanganate in molar ratio: MnAC: KMnO
4Mix at=2: 3, and fully grind 30min, places the interior isothermal reaction of 70 ℃ of baking ovens 48 hours, and vacuum 1500Pa, product spend deionised water 3 times, and suction filtration is used absolute ethanol washing 3 times again; Suction filtration; In 60 ℃ dry 12 hours down, vacuum 1500Pa through compressing tablet, pulverize, sieve and make 40～60 purpose particles, is manganese oxide catalyst.
With flow is that 200ml/min contains 0.05%NO, 3%O
2And 96.95%N
2Mist feed in the plasma reactor and activate, again by in the fixed-bed tube reactor that the above-mentioned catalyst of 0.2g is housed, at 25 ℃, air speed is 51000h
-1Under the condition, with the NO catalytic oxidation, reacted gas enters the ammoniacal liquor absorption bottle, gets ammonium nitrate products.The purification efficiency of NO reaches 98%.
Embodiment 2:
With manganese acetate and potassium permanganate in molar ratio: MnAC: KMnO
4Mix at=2: 3, and fully grind 40min, places the interior isothermal reaction of 70 ℃ of baking ovens 72 hours, and vacuum 900Pa, product spend deionised water 4 times, and suction filtration is used absolute ethanol washing 3 times, suction filtration again; In 70 ℃ dry 18 hours down, vacuum 900Pa through compressing tablet, pulverize, sieve and make 40～60 purpose particles, makes manganese oxide catalyst.
With flow is that 200ml/min contains 0.05%NO, 3%O
2And 96.95%N
2Mist feed in the plasma reactor and activate, by the fixed-bed tube reactor of the above-mentioned catalyst of 0.2g is housed, the control reaction temperature is 100 ℃ again, air speed is 51000h
-1, NO enters the ammoniacal liquor absorption bottle after catalytic oxidation, get ammonium nitrate products.The purification efficiency of NO can reach 99%.
Embodiment 3:
With manganese acetate and potassium permanganate in molar ratio: MnAC: KMnO
4Mix at=2: 3, and fully grind 40min, places the interior isothermal reaction of 80 ℃ of baking ovens 60 hours, and vacuum 1800Pa, product spend deionised water 3 times, and suction filtration is used absolute ethanol washing 3 times, suction filtration again; Drying is 12 hours under 70 ℃, and vacuum 1800Pa makes 40 ~ 60 purpose particles through compressing tablet, the pulverizing of sieving, and makes the manganese-base oxide catalyst.
With flow is that 200ml/min contains 0.05%NO, 3%O
2And 96.95%N
2Mist feed in the plasma reactor and activate, by the fixed-bed tube reactor of the above-mentioned catalyst of 0.2g is housed, the control reaction temperature is 120 ℃ again, air speed is 15000h
-1, NO enters the ammoniacal liquor absorption bottle after catalytic oxidation, get ammonium nitrate products.The purification efficiency of NO can reach 99%.
Embodiment 4:
With manganese acetate and potassium permanganate in molar ratio: MnAC: KMnO
4Mix at=3: 4, and fully grind 30min, places the interior isothermal reaction of 70 ℃ of baking ovens 48 hours, and vacuum 2000Pa, product spend deionised water 4 times, and suction filtration is used absolute ethanol washing 3 times, suction filtration again; In 70 ℃ dry 24 hours down, vacuum 2000Pa through compressing tablet, pulverize, sieve and make 40 ~ 60 purpose particles, makes manganese oxide catalyst.
With flow is that 200ml/min contains 0.03%NO, 3%O
2And 96.97%N
2Mist feed in the plasma reactor and activate, again by the fixed-bed tube reactor of the above-mentioned catalyst of 0.2g is housed, at 25 ℃, air speed is 51000h
-1Condition under, after the NO catalytic oxidation, gas enters the ammoniacal liquor absorption bottle, ammonium nitrate products.The purification efficiency of NO is 98%.
Claims (4)
1, a kind of under the low-temperature plasma concrete conditions in the establishment of a specific crime Preparation of catalysts method of deep oxidation nitrogen oxide, it is characterized in that following steps:
1), manganese acetate is placed mortar with potassium permanganate by mixing;
2), mixture is mixed, fully ground 30 ~ 40 minutes;
3), mortar was placed in the vacuum drying chamber constant temperature 48 ~ 72 hours;
4), product spends deionised water 3 ~ 4 times, suction filtration; Use absolute ethanol washing again 2 ~ 3 times, suction filtration;
5), 60 ~ 80 ℃ of following vacuum drying 12 ~ 24 hours, vacuum 900 ~ 4000Pa, the black manganese oxide particle.
2, according to claim 1 described under the low-temperature plasma concrete conditions in the establishment of a specific crime Preparation of catalysts method of deep oxidation nitrogen oxide, it is characterized in that the mol ratio MnAC:KMnO of described manganese acetate and potassium permanganate
4=0.2 ~ 1.
3, according to claim 1 described under the low-temperature plasma concrete conditions in the establishment of a specific crime Preparation of catalysts method of deep oxidation nitrogen oxide, it is characterized in that the temperature in the described vacuum drying chamber is 60 ~ 80 ℃, vacuum 900 ~ 4000Pa.
4, according to claim 1 described under the low-temperature plasma concrete conditions in the establishment of a specific crime Preparation of catalysts method of deep oxidation nitrogen oxide, it is characterized in that described black manganese oxide particle is 40～60 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094393A CN101530795A (en) | 2009-04-24 | 2009-04-24 | Catalyst for catalyzing and oxidizing nitrogen oxide and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910094393A CN101530795A (en) | 2009-04-24 | 2009-04-24 | Catalyst for catalyzing and oxidizing nitrogen oxide and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101530795A true CN101530795A (en) | 2009-09-16 |
Family
ID=41101781
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|---|---|---|---|
| CN200910094393A Pending CN101530795A (en) | 2009-04-24 | 2009-04-24 | Catalyst for catalyzing and oxidizing nitrogen oxide and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101773780A (en) * | 2010-03-23 | 2010-07-14 | 昆明理工大学 | Method for depriving nitric oxide by plasma cooperating with low-temperature catalytic oxidation NO |
| CN101822945A (en) * | 2010-05-05 | 2010-09-08 | 昆明理工大学 | Method for catalytic oxidation of nitric oxide with low-temperature plasma modified catalyst |
| CN102000563A (en) * | 2010-10-29 | 2011-04-06 | 重庆大学 | Method for preparing SCR (Selective Catalytic Reduction) denitration catalyst by slag and catalyst thereof |
| CN101862652B (en) * | 2010-01-26 | 2011-11-09 | 重庆大学 | Preparation method of SCR flue gas denitration catalyst and product thereof |
| CN102274733A (en) * | 2010-06-11 | 2011-12-14 | 南京理工大学 | Catalyst used for catalytically oxidizing NO and preparation method thereof |
| CN105089745A (en) * | 2014-04-17 | 2015-11-25 | 通用电气公司 | System and method for reducing nitrogen oxide in waste exhaust |
| CN105903464A (en) * | 2016-05-12 | 2016-08-31 | 太原理工大学 | NO oxidation catalyst with wide activity temperature window and preparation method and application thereof |
| CN107008338A (en) * | 2017-04-05 | 2017-08-04 | 西安科技大学 | A kind of method that plasma method prepares SCO denitration catalyst |
| CN111841562A (en) * | 2019-04-29 | 2020-10-30 | 北京化工大学 | NH for low-temperature plasma3Catalyst for selective catalytic reduction process and method for preparing the same |
-
2009
- 2009-04-24 CN CN200910094393A patent/CN101530795A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862652B (en) * | 2010-01-26 | 2011-11-09 | 重庆大学 | Preparation method of SCR flue gas denitration catalyst and product thereof |
| CN101773780A (en) * | 2010-03-23 | 2010-07-14 | 昆明理工大学 | Method for depriving nitric oxide by plasma cooperating with low-temperature catalytic oxidation NO |
| CN101822945A (en) * | 2010-05-05 | 2010-09-08 | 昆明理工大学 | Method for catalytic oxidation of nitric oxide with low-temperature plasma modified catalyst |
| CN102274733B (en) * | 2010-06-11 | 2013-03-27 | 南京理工大学 | Catalyst used for catalytically oxidizing NO and preparation method thereof |
| CN102274733A (en) * | 2010-06-11 | 2011-12-14 | 南京理工大学 | Catalyst used for catalytically oxidizing NO and preparation method thereof |
| CN102000563B (en) * | 2010-10-29 | 2012-01-25 | 重庆大学 | Method for preparing SCR (Selective Catalytic Reduction) denitration catalyst by slag and catalyst thereof |
| CN102000563A (en) * | 2010-10-29 | 2011-04-06 | 重庆大学 | Method for preparing SCR (Selective Catalytic Reduction) denitration catalyst by slag and catalyst thereof |
| CN105089745A (en) * | 2014-04-17 | 2015-11-25 | 通用电气公司 | System and method for reducing nitrogen oxide in waste exhaust |
| CN105089745B (en) * | 2014-04-17 | 2018-08-14 | 通用电气公司 | The system and method for reducing the nitrogen oxides in useless exhaust |
| CN105903464A (en) * | 2016-05-12 | 2016-08-31 | 太原理工大学 | NO oxidation catalyst with wide activity temperature window and preparation method and application thereof |
| CN105903464B (en) * | 2016-05-12 | 2019-05-24 | 太原理工大学 | NO oxidation catalyst and preparation method and application with wide active temperature windows |
| CN107008338A (en) * | 2017-04-05 | 2017-08-04 | 西安科技大学 | A kind of method that plasma method prepares SCO denitration catalyst |
| CN107008338B (en) * | 2017-04-05 | 2019-11-26 | 西安科技大学 | A kind of method of plasma method preparation SCO denitration catalyst |
| CN111841562A (en) * | 2019-04-29 | 2020-10-30 | 北京化工大学 | NH for low-temperature plasma3Catalyst for selective catalytic reduction process and method for preparing the same |
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Application publication date: 20090916 |