Catalyst for purifying motor vehicle exhaust gases and process f

Details Catalyst for purifying motor vehicle exhaust gases and process f Catalyst for purifying motor vehicle exhaust gases and process f

1987-09-29

1989-02-21

Shine, W. J.

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

Catalyst or precursor therefor

Silicon containing or process of making

502304, 4232135, B01J 2106, B01J 2310, B01J 2342, B01J 2346

Patent

active

048065196

ABSTRACT:
A catalyst, and a method for producing the catalyst, and a method for purifying exhaust gases which is very efficient in its use of rhodium has a layered catalytic structure on a refractory substrate, the inner layer containing ceria and platinum, the outer layer containing zirconia and rhodium.

REFERENCES:
patent: 4378307 (1980-09-01), Brunelle et al.
patent: 4581343 (1986-04-01), Blanchard et al.
patent: 4587231 (1986-05-01), Sawamura et al.
patent: 4680282 (1987-07-01), Blanchard et al.
Patent Abstracts of Japan, vol. 8, No. 246 (C-251)[1683], Nov. 10, 1984; & JP-A-59 127 649 (Toyota Jidosha K.K.) 23-07-1984.

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