Multilayered catalyst compositions

Details Multilayered catalyst compositions Multilayered catalyst compositions

2011-08-30

2011-08-30

Nguyen, Cam N (Department: 1736)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C502S261000, C502S262000, C502S263000, C502S302000, C502S303000, C502S304000, C502S326000, C502S327000, C502S332000, C502S333000, C502S334000, C502S339000, C502S349000, C502S355000, C502S415000, C502S439000, C502S527120, C502S527130

Reexamination Certificate

active

08007750

ABSTRACT:
A layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides is disclosed. Methods of making and using the same are also provided. In one or more embodiments, the catalyst comprises three layers of catalytic material in conjunction with a carrier. A first layer comprises a platinum component on a first support; a second layer comprises a rhodium component on a second support; and a third layer comprises a palladium component and a third support. The palladium, rhodium, and/or platinum can independently be deposited on a support of high surface area refractory metal oxide, or of an oxygen storage component, or both.

REFERENCES:
patent: 4128506 (1978-12-01), Hegedus et al.
patent: 4152301 (1979-05-01), Summers et al.
patent: 4287856 (1981-09-01), Enga
patent: 5254519 (1993-10-01), Wan et al.
patent: 5332554 (1994-07-01), Yasaki et al.
patent: 5407880 (1995-04-01), Ikeda et al.
patent: 5525307 (1996-06-01), Yasaki et al.
patent: 5593647 (1997-01-01), Kirby
patent: 5597771 (1997-01-01), Hu et al.
patent: 5814576 (1998-09-01), Yamamoto
patent: 5898014 (1999-04-01), Wu et al.
patent: 5948377 (1999-09-01), Sung
patent: 5948723 (1999-09-01), Sung
patent: 5981427 (1999-11-01), Sung et al.
patent: 5989507 (1999-11-01), Sung
patent: 6087298 (2000-07-01), Sung et al.
patent: 6110862 (2000-08-01), Chen et al.
patent: 6248688 (2001-06-01), Wu et al.
patent: 6294140 (2001-09-01), Mussmann et al.
patent: 6348430 (2002-02-01), Lindner et al.
patent: 6375910 (2002-04-01), Deeba et al.
patent: 6413483 (2002-07-01), Brisley et al.
patent: 6492297 (2002-12-01), Sung
patent: 6497851 (2002-12-01), Hu et al.
patent: 6503862 (2003-01-01), Yamamoto
patent: 6514905 (2003-02-01), Hanaki et al.
patent: 6524992 (2003-02-01), Mussmann et al.
patent: 6589901 (2003-07-01), Yamamoto et al.
patent: 6625976 (2003-09-01), Anderson et al.
patent: 6680036 (2004-01-01), Fisher et al.
patent: 6692712 (2004-02-01), Anderson
patent: 6764665 (2004-07-01), Deeba et al.
patent: 6777370 (2004-08-01), Chen
patent: 6881384 (2005-04-01), Uenishi et al.
patent: 6923945 (2005-08-01), Chen
patent: 7022646 (2006-04-01), Li
patent: 7189376 (2007-03-01), Kumar et al.
patent: 7276212 (2007-10-01), Hu et al.
patent: 7374729 (2008-05-01), Chen et al.
patent: 7501098 (2009-03-01), Chen et al.
patent: 7517510 (2009-04-01), Chen et al.
patent: 7524465 (2009-04-01), Kumar et al.
patent: 7550124 (2009-06-01), Chen et al.
patent: 7754171 (2010-07-01), Chen et al.
patent: 7758834 (2010-07-01), Chen et al.
patent: 7795172 (2010-09-01), Foong et al.
patent: 2003/0021745 (2003-01-01), Chen
patent: 2003/0175192 (2003-09-01), Hu et al.
patent: 2004/0223897 (2004-11-01), Yeo
patent: 2005/0164879 (2005-07-01), Chen
patent: 2005/0227867 (2005-10-01), Chen et al.
patent: 2005/0282701 (2005-12-01), Foong et al.
patent: 2007/0014705 (2007-01-01), Chen
patent: 2007/0093382 (2007-04-01), Vanderspurt
patent: 2008/0044329 (2008-02-01), Chen et al.
patent: 2008/0044330 (2008-02-01), Chen et al.
patent: 2009/0175773 (2009-07-01), Chen et al.
patent: 0566401 (1993-10-01), None
patent: 0665047 (1995-08-01), None
patent: 62057651 (1987-03-01), None
patent: 5277370 (1993-10-01), None
patent: 2003112049 (2003-04-01), None
patent: WO-02/083301 (2002-10-01), None
patent: WO-2006/009684 (2006-01-01), None
patent: WO-2008/097702 (2008-08-01), None
PCT International Search Report for PCT/US2008/070248, (Oct. 16, 2008), 7 pgs.

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