JPS57127426A - Method for removal of nitrogen oxide - Google Patents
Method for removal of nitrogen oxideInfo
- Publication number
- JPS57127426A JPS57127426A JP56010813A JP1081381A JPS57127426A JP S57127426 A JPS57127426 A JP S57127426A JP 56010813 A JP56010813 A JP 56010813A JP 1081381 A JP1081381 A JP 1081381A JP S57127426 A JPS57127426 A JP S57127426A
- Authority
- JP
- Japan
- Prior art keywords
- nox
- activity
- oxides
- catalyst
- observed
- 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
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE: To obtain a catalyst of high heat resistance having sufficient activity at elevated temp. over a long period of time in performing catalytic reduction of NOX in the presence of NH3 by forming the carrier of catalysts of composite oxides contg. P as a constituting element.
CONSTITUTION: This catalyst contains both components of A) ≥1 kinds of 3- or 4-element composite oxides consisting of Ti, P, Si and/or Zr, and B) oxides of ≥1 kinds of W, Ce, Sn. Here, the component A per se has activity for the NOX in waste gases, and also plays the role of a carrier. This is a solid acid and exhibits marked acidity not observed in respective independent oxides, and has high heat resistance coupled with high specific surface area. With the P in the component A, various effects can be observed; above all, it suppresses particularly the oxidation of NH3 to NOX and the crystallization of catalyst components. As a result, it maintains high activity for a long period of time.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56010813A JPS57127426A (en) | 1981-01-29 | 1981-01-29 | Method for removal of nitrogen oxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56010813A JPS57127426A (en) | 1981-01-29 | 1981-01-29 | Method for removal of nitrogen oxide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57127426A true JPS57127426A (en) | 1982-08-07 |
JPS6215247B2 JPS6215247B2 (en) | 1987-04-07 |
Family
ID=11760780
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56010813A Granted JPS57127426A (en) | 1981-01-29 | 1981-01-29 | Method for removal of nitrogen oxide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57127426A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812296A (en) * | 1985-09-06 | 1989-03-14 | Siemens Aktiengesellschaft | Process utilizing catalytic material for the reduction of nitrous oxides |
JPH09155196A (en) * | 1995-12-13 | 1997-06-17 | Jisedai Haigasu Shokubai Kenkyusho:Kk | Exhaust gas cleaning catalyst and manufacture thereof |
WO2005082494A1 (en) * | 2004-02-27 | 2005-09-09 | Tokyo Roki Co. Ltd. | Catalyst system for removing nitrogen oxide and method for removing nitrogen oxide |
JP2008296224A (en) * | 2008-09-02 | 2008-12-11 | Tokyo Roki Co Ltd | Nitrogen oxide removing catalyst, nitrogen oxide removing method using it, and nitrogen oxide removing device |
WO2011042953A1 (en) * | 2009-10-06 | 2011-04-14 | 三菱重工業株式会社 | Nox reduction catalyst for high-temperature exhaust gas, method for producing same, and method for reducing nox in high-temperature exhaust gas |
JP2013078768A (en) * | 2013-02-04 | 2013-05-02 | Mitsubishi Heavy Ind Ltd | Denitration catalyst for high-temperature exhaust gas, method for producing the catalyst, and method for denitrating high-temperature exhaust gas |
CN106040287A (en) * | 2015-04-13 | 2016-10-26 | 丰田自动车株式会社 | Exhaust gas purification catalyst |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5217365A (en) * | 1975-07-31 | 1977-02-09 | Mitsubishi Chem Ind Ltd | Catalytic reduction and decomposition process for nitrogen oxides |
JPS5242464A (en) * | 1975-10-01 | 1977-04-02 | Hitachi Ltd | Method of reducing and removing nox in exhaust gas |
JPS5268858A (en) * | 1975-12-05 | 1977-06-08 | Hitachi Ltd | Oxidizing decomposition method of ammonia |
JPS5275656A (en) * | 1975-12-19 | 1977-06-24 | Asahi Glass Co Ltd | Treatment of nitrogen oxides |
JPS55157329A (en) * | 1979-05-25 | 1980-12-08 | Fuji Titan Kogyo Kk | Preparation of catalyst support |
-
1981
- 1981-01-29 JP JP56010813A patent/JPS57127426A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5217365A (en) * | 1975-07-31 | 1977-02-09 | Mitsubishi Chem Ind Ltd | Catalytic reduction and decomposition process for nitrogen oxides |
JPS5242464A (en) * | 1975-10-01 | 1977-04-02 | Hitachi Ltd | Method of reducing and removing nox in exhaust gas |
JPS5268858A (en) * | 1975-12-05 | 1977-06-08 | Hitachi Ltd | Oxidizing decomposition method of ammonia |
JPS5275656A (en) * | 1975-12-19 | 1977-06-24 | Asahi Glass Co Ltd | Treatment of nitrogen oxides |
JPS55157329A (en) * | 1979-05-25 | 1980-12-08 | Fuji Titan Kogyo Kk | Preparation of catalyst support |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4812296A (en) * | 1985-09-06 | 1989-03-14 | Siemens Aktiengesellschaft | Process utilizing catalytic material for the reduction of nitrous oxides |
JPH09155196A (en) * | 1995-12-13 | 1997-06-17 | Jisedai Haigasu Shokubai Kenkyusho:Kk | Exhaust gas cleaning catalyst and manufacture thereof |
WO2005082494A1 (en) * | 2004-02-27 | 2005-09-09 | Tokyo Roki Co. Ltd. | Catalyst system for removing nitrogen oxide and method for removing nitrogen oxide |
US7597865B2 (en) | 2004-02-27 | 2009-10-06 | Tokyo Roki Co., Ltd | Nitrogen oxide removal catalyst system and nitrogen oxide removal method |
EP2305367A1 (en) * | 2004-02-27 | 2011-04-06 | Tokyo Roki Co. Ltd. | Catalyst system for removing nitrogen oxide and method for removing nitrogen oxide |
JP2008296224A (en) * | 2008-09-02 | 2008-12-11 | Tokyo Roki Co Ltd | Nitrogen oxide removing catalyst, nitrogen oxide removing method using it, and nitrogen oxide removing device |
WO2011042953A1 (en) * | 2009-10-06 | 2011-04-14 | 三菱重工業株式会社 | Nox reduction catalyst for high-temperature exhaust gas, method for producing same, and method for reducing nox in high-temperature exhaust gas |
RU2476258C2 (en) * | 2009-10-06 | 2013-02-27 | Мицубиси Хеви Индастриз, Лтд. | CATALYST OF NOx REMOVAL FROM HIGH-TEMPERATURE SMOKE GAS, METHOD OF ITS OBTAINING AND METHOD OF NOx REMOVAL FROM HIGH-TEMPERATURE SMOKE GAS |
JPWO2011042953A1 (en) * | 2009-10-06 | 2013-02-28 | 三菱重工業株式会社 | Denitration catalyst for high temperature exhaust gas and method for producing the same, high temperature exhaust gas denitration method |
US8815194B2 (en) | 2009-10-06 | 2014-08-26 | Mitsubishi Heavy Industries, Ltd. | NOx removal catalyst for high-temperature flue gas, manufacturing method thereof, and NOx removal method for high-temperature flue gas |
US9302251B2 (en) | 2009-10-06 | 2016-04-05 | Mitsubishi Heavy Industries, Ltd. | NOx removal catalyst for high-temperature flue gas, manufacturing method thereof, and NOx removal method for high-temperature flue gas |
JP2013078768A (en) * | 2013-02-04 | 2013-05-02 | Mitsubishi Heavy Ind Ltd | Denitration catalyst for high-temperature exhaust gas, method for producing the catalyst, and method for denitrating high-temperature exhaust gas |
CN106040287A (en) * | 2015-04-13 | 2016-10-26 | 丰田自动车株式会社 | Exhaust gas purification catalyst |
JP2016198741A (en) * | 2015-04-13 | 2016-12-01 | トヨタ自動車株式会社 | Catalyst for exhaust purification |
US9789474B2 (en) | 2015-04-13 | 2017-10-17 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification catalyst |
Also Published As
Publication number | Publication date |
---|---|
JPS6215247B2 (en) | 1987-04-07 |
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