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Method for purifying exhaust gases with two layer catalyst in oxygen-rich atmosphere

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B01D-053/60
  • C01K-001/34
출원번호 US-0625922 (1996-04-01)
우선권정보 JP-0004436 (1994-01-20)
발명자 / 주소
  • Suzuki Hiromasa,JPX
  • Miyoshi Naoto,JPX
출원인 / 주소
  • Toyota Jidosha Kabushiki Kaisha, JPX
대리인 / 주소
    Oliff & Berridge, P.L.C.
인용정보 피인용 횟수 : 24  인용 특허 : 10

초록

A catalyst for purifying exhaust gases which aims to efficiently purify NO.sub.x in exhaust gases in oxygen-rich atmospheres whose oxygen concentrations are more than required for oxidizing CO and HC, and to attain improved NO.sub.x purifying performance after used for a long time. The catalyst comp

대표청구항

[ What is claimed is:] [1.] A method for purifying exhaust gas comprising bringing exhaust gas into contact with a catalyst in oxygen-rich atmospheres in which oxygen concentrations of the exhaust gas are at or above the stoichiometric point required for oxidizing components of the exhaust gas to be

이 특허에 인용된 특허 (10)

  1. Nishino Atsushi (Neyagawa JPX) Kimura Kunio (Hirakata JPX) Sonetaka Kazunori (Hirakata JPX) Takeuchi Yasuhiro (Hirakata JPX), Catalyst for purifying exhaust gases and method for manufacturing same.
  2. Blanchard Gilbert (Le Plessis Belleville FRX) Garreau Francois (Paris FRX) Prigent Michel (Rueil Malmaison FRX) Dozieres Richard (Beynes FRX), Catalyst for the conversion of vehicular exhaust gases and process for preparing the catalyst.
  3. Komatsu Noboru (Toyoake JA) Kamigaito Osami (Nagoya JA) Suzuki Takatoshi (Nagoya JA) Yamamoto Nobuyuki (Nagoya JA) Doi Haruo (Nagoya JA) Sano Kazuya (Nagoya JA) Kandori Toshio (Nagoya JA) Tsuzuki Yuk, Converter for the purification of exhaust gases.
  4. McArthur ; Dennis P., Exhaust gas conversion process and catalyst.
  5. Kinoshita Hiroo (Toyota JPX) Suzuki Yoshihiro (Toyota JPX) Saruhashi Shoji (Shizuoka JPX) Sato Masayasu (Shizuoka JPX), Exhaust gas purifying catalyst.
  6. Williamson W. Burton (Broken Arrow OK) Linden Douglas G. (Tulsa OK) Summers ; II Jack C. (Tulsa OK), High durability and exhuast catalyst with low hydrogen sulfide emissions.
  7. Fedor Robert J. (Westlake OH) Lee Chin-Ho (Lyndhurst OH) Makowski M. Paul (Wickliffe OH), Method and apparatus for treating exhaust gases.
  8. Takeshima Shinichi (Susono JPX) Seto Satomi (Gotenba JPX) Hirota Shinya (Susono JPX), NOx decreasing apparatus for an internal combustion engine.
  9. Summers Jack C. (Rochester MI) Hegedus Louis (Grosse Pointe Woods MI), Platinum, rhodium, and palladium catalyst for automotive emission control.
  10. Wan Chung-Zong (Somerset NJ) Dettling Joseph C. (Howell NJ) Jagel Kenneth I. (Stanton NJ), Three-way catalyst for lean exhaust systems.

이 특허를 인용한 특허 (24)

  1. Labarge, William J.; Hemingway, Mark; Kupe, Joachim; Fisher, Galen B., Alkali metal/alkaline earth lean NOx catalyst.
  2. Labarge, William J.; Hemingway, Mark David; Kupe, Joachim; Fisher, Galen Bruce, Alumina/zeolite lean NOx catalyst.
  3. Kurokawa Takahiro,JPX ; Takami Akihide,JPX ; Iwakuni Hideharu,JPX ; Kyogoku Makoto,JPX ; Okamoto Kenji,JPX ; Yamada Hiroshi,JPX, Catalyst for purifying exhaust gas.
  4. Kasahara,Koichi; Sato,Yasunori; Taki,Kenichi, Catalyst for purifying exhaust gases.
  5. Katsuo Suga JP; Masanori Nakamura JP, Catalyst system for purifying oxygen rich exhaust gas.
  6. Michel Deeba ; Uwe Dahle DE; Stefan Brandt DE; John K. Hochmuth, Catalytic trap with potassium component and method of using the same.
  7. Danan Dou ; Owen H. Bailey, Dual NOx adsorber catalyst system.
  8. Deeba, Michel; Chen, Shau-Lin F.; Hochmuth, John K.; Burk, Patrick L.; Wei, Xinyi, Enhanced NOx trap having increased durability.
  9. Shimoda, Kouhei; Nakagama, Syoji; Ihara, Tomohiko, Exhaust emission control device and method of manufacturing the same.
  10. Okude Kojiro,JPX ; Iizuka Hidehiro,JPX ; Kuroda Osamu,JPX ; Doi Ryouta,JPX ; Ogawa Toshio,JPX ; Yamashita Hisao,JPX ; Azuhata Shigeru,JPX ; Kitahara Yuichi,JPX ; Hiratsuka Toshifumi,JPX ; Shinotsuka , Exhaust gas cleaning apparatus and method for internal combustion engine.
  11. Hanaoka Hiroshi,JPX ; Kuroda Osamu,JPX ; Doi Ryouta,JPX ; Iizuka Hidehiro,JPX ; Ogawa Toshio,JPX ; Yamashita Hisao,JPX ; Azuhata Shigeru,JPX ; Kitahara Yuichi,JPX ; Hiratsuka Toshifumi,JPX ; Okude Ko, Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas internal combustion engine.
  12. Hanaoka,Hiroshi; Kuroda,Osamu; Doi,Ryouta; Iizuka,Hidehiro; Ogawa,Toshio; Yamashita,Hisao; Azuhata,Shigeru; Kitahara,Yuichi; Hiratsuka,Toshifumi; Okude,Kojiro; Shinotsuka,Norihiro; Manaka,Toshio, Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine.
  13. Hiroshi Hanaoka JP; Osamu Kuroda JP; Ryouta Doi JP; Hidehiro Iizuka JP; Toshio Ogawa JP; Hisao Yamashita JP; Shigeru Azuhata JP; Yuichi Kitahara JP; Toshifumi Hiratsuka JP; Kojiro Okude JP;, Exhaust gas purification apparatus of internal combustion engine and catalyst for purifying exhaust gas of internal combustion engine.
  14. Tanada, Hiroshi; Nakayama, Osamu; Tashiro, Keisuke; Iwachido, Kinichi; Watanabe, Tetsuya; Koga, Kazuo, Exhaust gas purifying catalyst.
  15. Shirahata, Junya; Tomiyasu, Kohei; Ito, Kazunori, Exhaust-gas purifying catalyst.
  16. Haga, Fumihiro; Kaneko, Hiroaki, Methanol reforming catalyst.
  17. Iizuka, Hidehiro; Doi, Ryouta; Hanaoka, Hiroshi; Ogawa, Toshio; Kuroda, Osamu; Yamashita, Hisao; Azuhata, Shigeru; Kitahara, Yuichi; Shinotsuka, Norihiro, Method for purifying exhaust gas from internal combustion engines.
  18. White James H., Method for the reagentless removal of nitrogen oxides from exhaust streams.
  19. Van Den Brink,Rudolf Willem; Pels,Jan Remmert, Method for the simultaneous removal of nitrogen oxides and laughing gas from a gas stream containing nitrogen oxides and laughing gas.
  20. Hori, Masao; Horiuchi, Makoto, Method of the purification of the exhaust gas from a lean-burn engine using a catalyst.
  21. Van Den Bussche, Norman; Michalakos, Peter M.; Williams, James C.; Renneke, Roman; Tom, Robert, NOx filter.
  22. Dou, Danan, NiO catalyst configurations, methods for making NOx adsorbers, and methods for reducing emissions.
  23. Pott Ekkehard,DEX, No exhaust emission control method and arrangement.
  24. Takeshima,Shinichi; Yamashita,Tetsuya, Particulate burning catalyst.
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