Title:
A PREPOSITIVE OXIDATION CATALYST FOR DIESEL VEHICLES AND ITS PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2010/028531
Kind Code:
A1
Abstract:
A Prepositive oxidation catalyst for diesel vehicles and its preparation method. A slurry obtained by mixing zirconium salt solution, the powder containing titanium dioxide with water, or mixing the powder containing titanium dioxide with water, is coated on the surface of honeycomb carriers, and then dried and calcined. The carriers obtained are impregnated in the salt solution containing one or more of active components selected from Pt, Rh and Pd, then dried and calcined in order to obtain the catalyst. In the catalyst, to the coating weight, the titanium dioxide content is 50~100wt%, the zirconia content is 0~30wt%, the active components content is 0.1~3wt%.
Inventors:
WENG DUAN (CN)
SI ZHICHUN (CN)
WU XIAODONG (CN)
RAN RUI (CN)
ZHOU ZHOU (CN)
SI ZHICHUN (CN)
WU XIAODONG (CN)
RAN RUI (CN)
ZHOU ZHOU (CN)
Application Number:
PCT/CN2008/073915
Publication Date:
March 18, 2010
Filing Date:
December 31, 2008
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
WENG DUAN (CN)
SI ZHICHUN (CN)
WU XIAODONG (CN)
RAN RUI (CN)
ZHOU ZHOU (CN)
WENG DUAN (CN)
SI ZHICHUN (CN)
WU XIAODONG (CN)
RAN RUI (CN)
ZHOU ZHOU (CN)
International Classes:
B01J23/40; B01D53/94; B01J21/06; B01J35/04; B01J37/025
Foreign References:
| CN1548225A | 2004-11-24 | |||
| US5082820A | 1992-01-21 | |||
| CN101352682A | 2009-01-28 | |||
| CN1995713A | 2007-07-11 | |||
| CN100998941A | 2007-07-18 |
Other References:
YU YAO ET AL.: "Preparation of Titanium-Zirconium Mixed Oxide and its Catalytic Performance of Pt Three-way Catalysts.", JOURNAL OF INORGANIC MATERIALS., vol. 23, no. 1, January 2008 (2008-01-01), pages 71 - 76
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (He Jing Yuan Ji Men Li, Xueyuan Road, Haidian District, Beijing 8, CN)
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