Aluminum-stabilized ceria catalyst compositions, and methods of

Details Aluminum-stabilized ceria catalyst compositions, and methods of Aluminum-stabilized ceria catalyst compositions, and methods of

1986-06-30

1987-12-22

Metz, Andrew H.

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502332, 502333, 502334, 502355, 502439, 502527, B01J 2310, B01J 2356

Patent

active

047146940

ABSTRACT:
A catalyst material comprises an aluminum-stabilized ceria which optionally may be combined with an activated alumina and may also comprise one or more platinum group metal catalytic components. A method of making the material includes impregnating bulk ceria or a bulk ceria precursor with an aluminum compound and calcining the impregnated ceria to provide an aluminum-stabilized ceria. The bulk ceria advantageously comprises a high purity (at least 90 weight percent CeO.sub.2) ceria and may be admixed with activated aluminia having one or more platinum group metal catalytic components dispersed thereon. The catalyst material may be coated onto a suitable carrier substrate and then calcined. Specified minimum levels of the aluminum-stabilized bulk ceria are advantageously employed in the catalyst materials of the invention. The bulk ceria may have one or more preferably non-rhodium platinum group metal catalytic components dispersed thereon, e.g., a platinum catalytic component, and one or more platinum group metal catalytic components dispersed on the activated alumina.

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patent: 4537873 (1985-08-01), Kato et al.
patent: 4585752 (1986-04-01), Ernest

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