Exhaust gas purifying catalyst

Details Exhaust gas purifying catalyst Exhaust gas purifying catalyst

2005-12-23

2010-12-07

Mayes, Melvin C (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S303000

Reexamination Certificate

active

07846863

ABSTRACT:
An exhaust gas purifying catalyst comprises a substrate having a through hole serving as a passage for exhaust gas; and a catalyst coating layer formed on an internal surface of the through hole. The catalyst coating layer contains: a component (i): a precious metal; and a component (ii): at least one of a Zr oxide, a Ce oxide and a ZrCe mixed oxide. On an upstream portion of the passage, an oxide equivalent weight of Zr is within a range of 51-100 wt % of an oxide equivalent weight of Zr and Ce contained in the component (ii). On a downstream portion of the passage, the component (ii) includes at least one of a Ce oxide and a ZrCe mixed oxide in which an oxide equivalent weight of Ce is within a range of 58-100 wt % of an oxide equivalent weight of Zr and Ce contained in the ZrCe mixed oxide.

REFERENCES:
patent: 6150299 (2000-11-01), Umemoto et al.
patent: 6217831 (2001-04-01), Suzuki et al.
patent: 2001/0031699 (2001-10-01), Matsumoto et al.
patent: 2003/0083193 (2003-05-01), Takaya et al.
patent: 0507590 (1992-10-01), None
patent: 0885657 (1998-12-01), None
patent: 1136115 (2001-09-01), None
patent: 3196841 (1991-08-01), None
patent: 05023593 (1993-02-01), None
patent: 5023593 (1993-02-01), None
patent: 5-049940 (1993-03-01), None
patent: 2000-502602 (2000-03-01), None
patent: 2001-162166 (2001-06-01), None
patent: 2001-259424 (2001-09-01), None
patent: 9723278 (1997-04-01), None
patent: 97/23278 (1997-07-01), None

Affiliated with

Also associated with

Rating

Exhaust gas purifying catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas purifying catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas purifying catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4215557