Preparation of three-way catalysts with highly dispersed ceria

Details Preparation of three-way catalysts with highly dispersed ceria Preparation of three-way catalysts with highly dispersed ceria

1990-08-31

1991-11-12

Garvin, Patrick P.

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

Catalyst or precursor therefor

Organic compound containing

502172, 502304, B01J 3104

Patent

active

050648039

ABSTRACT:
Improved three-way catalysts for use in converting the exhaust gases from internal combustion engines include ceria supported by an alumina or other metal oxide and the ceria in the freshly prepared catalysts is in the form of crystallites having a size less than 50 .ANG. as measured by X-ray diffraction.

REFERENCES:
patent: 4791091 (1988-12-01), Bricker
patent: 4868148 (1989-09-01), Henk et al
patent: 4868149 (1989-09-01), Bricker
SAE Technical paper, 881684, "A Study on Three Way Conversion Catalyst Thermal Deactivation and Improvement", M. Funabiki and T. Yamada.
Harrison et al., "Promoting Platinum Metals by Ceria", Platinum Metals Rev., 1988, 32, (2), 73-83.

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