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Preparation of three-way catalysts with highly dispersed ceria 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B01J-031/04
출원번호 US-0576306 (1990-08-31)
발명자 / 주소
  • Nunan John G. (Palatine IL)
출원인 / 주소
  • Allied-Signal Inc. (Morris Township, Morris County NJ 02)
인용정보 피인용 횟수 : 32  인용 특허 : 0

초록

Improved three-way catalysts for use in converting the exhaust gases from internal combustion engines include ceria supported by an alumina or other metal oxide and the ceria in the freshly prepared catalysts is in the form of crystallites having a size less than 50 Åas measured by X-ray diffraction

대표청구항

A method of preparing a catalyst for conversion of the exhaust from internal combustion engines comprising: (a) impregnating a support with a solution of a cerium compound and at least one organic compound containing hydroxyl and/or carboxylic acid moieties selected from the group consisting of poly

이 특허를 인용한 특허 (32)

  1. Lemaire Jacques,FRX ; Petta Denis,FRX ; Touret Olivier,FRX, Aggregates of ceric oxide crystallites and reduction of vehicular emissions therewith.
  2. Southward, Barry W. L.; Ellis, Curt, Base metal and base metal modified diesel oxidation catalysts.
  3. Southward, Barry W. L.; Ellis, Curt, Basic exchange for enhanced redox OS materials for emission control applications.
  4. Li, John; Goralski, Jr., Christian; Watkins, William; Graham, George; Gandhi, Harendra, Catalyst composition for use in a lean NOtrap and method of using.
  5. Li, John; Watkins, William; Goralski, Jr., Christian; Gandhi, Harendra, Catalyst composition for use in a lean NOtrap and method of using.
  6. Steiner, Jochen; Hoelzle, Markus; Urtel, Heiko, Catalyst for selective methanization of carbon monoxide.
  7. Steiner, Jochen; Hoelzle, Markus; Urtel, Heiko, Catalyst for selective methanization of carbon monoxide.
  8. Xue, Wen-Mei; Wei, Xinyi; Hilgendorff, Marcus; Burk, Patrick, Catalyst with improved hydrothermal stability.
  9. Nguyen Pascaline H. ; Chen James M. ; Wan Chung-Zong ; Chen Shau-Lin Frank ; Hu Zhicheng, Catalytic compositions and methods for suppression of halogenation of organic compounds with oxidation products of halo.
  10. Sung, Shiang; Roth, Stanley A.; Mueller-Stach, Torsten W.; Siani, Attilio, Diesel oxidation catalysts, systems and methods of treatment.
  11. Nakamura, Masanori; Suga, Katsuo, Exhaust gas purifying catalyst and method for manufacturing the same.
  12. Nunan John G., Highly dispersed substantially uniform mixed-metal-oxide composite supports for exhaust conversion catalysts.
  13. Jen, Hungwen; Graham, George; McCabe, Robert, Methods and formulations for enhancing NH3 adsorption capacity of selective catalytic reduction catalysts.
  14. Jen, Hungwen; Graham, George; McCabe, Robert, Methods and formulations for enhancing NH3 adsorption capacity of selective catalytic reduction catalysts.
  15. Yan,Jiyang, Methods for making a catalytic element, the catalytic element made therefrom, and catalyzed particulate filters.
  16. Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A., NO.sub.x reduction compositions for use in FCC processes.
  17. Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A. ; Zhao Xinjin, NO.sub.x reduction compositions for use in FCC processes.
  18. Alan W. Peters ; John A. Rudesill ; Gordon Dean Weatherbee ; Edward F. Rakiewicz ; Mary Jane A. Barbato-Grauso, NOx reduction compositions for use in FCC processes.
  19. Peters Alan W. ; Rudesill John A. ; Weatherbee Gordon Dean ; Rakiewicz Edward F. ; Barbato-Grauso Mary Jane A. ; Zhao Xinjin, NOx reduction compositions for use in FCC processes.
  20. Xue, Wen-Mei; Wei, Xinyi; Hilgendorff, Marcus; Burk, Patrick, NOx storage catalyst with improved hydrothermal stability and NOx conversion.
  21. Hilgendorff, Marcus; Roth, Stanley A.; Stiebels, Susanne, NOx storage materials and traps resistant to thermal aging.
  22. Hilgendorff, Marcus; Roth, Stanley A.; Stiebels, Susanne, NOx storage materials and traps resistant to thermal aging.
  23. Cai, Mei; Feng, Lee Lizhong; Ruthkosky, Martin S.; Rogers, Jerry Dale, Noble metal catalyst.
  24. Culross Claude C. ; Mauldin Charles H., Preparation of high activity catalysts; the catalysts and their use.
  25. Culross Claude C. ; Mauldin Charles H., Preparation of high activity catalysts; the catalysts and their use.
  26. Mauldin Charles H., Preparation of high activity catalysts; the catalysts and their use.
  27. Mauldin Charles H., Preparation of high activity catalysts; the catalysts and their use.
  28. Taguchi Norio,JPX ; Suzuki Juji,JPX, Process for producing exhaust-gas-purifying catalyst.
  29. Matsuo,Yuichi; Furukawa,Atsushi; Suzuki,Norihiko; Kiguchi,Kazunori, Purification catalyst for exhaust gas, production method therefor, and purification catalyst device for automobile exhaust gas.
  30. Matsuo,Yuichi; Furukawa,Atsushi; Suzuki,Norihiko; Kiguchi,Kazunori, Purification catalyst for exhaust gas, production method therefor, and purification catalyst device for automobile exhaust gas.
  31. Peters Alan W. ; Rakiewicz Edward F. ; Weatherbee Gordon Dean ; Zhao Xinjin, Reduced NO.sub.x combustion promoter for use in FCC processes.
  32. Alan W. Peters ; Edward F. Rakiewicz ; Gordon Dean Weatherbee ; Xinjin Zhao, Reduced NOx combustion promoter for use in FCC processes.
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