Catalyst for purification of exhaust gases

Details Catalyst for purification of exhaust gases Catalyst for purification of exhaust gases

1990-07-06

1991-11-05

Shine, W. J.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502304, 4232135, B01J 2104, B01J 2106, B01J 2302, B01J 2310

Patent

active

050631926

ABSTRACT:
A catalyst for the purification of exhaust gases contains a catalyst carrier with a first coat layer formed on a surface of the catalyst carrier and with a second coat layer formed on a surface of the first coat layer. The first coat layer contains an active alumina and a catalyst component comprised of a noble metal such as platinum and rhodium and at least one of zirconium oxide, lanthanum oxide and barium oxide is immobilized on particles of the active alumina, and the second coat layer contains an active alumina, cerium oxide and a catalyst component comprised of another noble metal such as palladium. The oxides of zirconium, lanthanum and/or barium can prevent the alumina particles from aggregating together due to heat, thereby improving heat resistance of the catalyst.

REFERENCES:
patent: 4680282 (1987-07-01), Blanchard et al.
patent: 4753915 (1988-06-01), Vogt et al.
patent: 4965243 (1990-10-01), Yamada et al.

Affiliated with

Also associated with

Rating

Catalyst for purification of exhaust gases does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Catalyst for purification of exhaust gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalyst for purification of exhaust gases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-499139