04727052 is referenced by 70 patents and cites 10 patents.

A method of making a catalyst composition comprising an activated alumina coating stabilized against thermal degradation includes applying a coating of alumina having one or more platinum group metal catalytic components dispersed thereon onto a carrier substrate and calcining the coating. The calcined coating is then impregnated with a solution of a thermal stabilizer-precursor and calcined again to provide a thermal stabilizer in the alumina. Bulk ceria, optionally an aluminum-stabilized bulk ceria, may also be added to the composition, preferably at specified minimum levels, including a high purity bulk ceria on which one or more non-rhodium platinum group metal catalytic components, e.g., platinum, optionally, are dispersed. A separate aspect of the invention provides for a method of making a catalyst composition including dispersing one or more platinum group metal catalytic components on an activated alumina and calcining the combined alumina and platinum group metal catalytic components. The steps are carried out under limited acidification conditions whereby at least minimum dispersions of the platinum group metal catalytic components are attained. The invention also provides for catalyst compositions resulting from either or both the foregoing methods.

Title
Catalyst compositions and methods of making the same
Application Number
6/879684
Publication Number
4727052
Application Date
June 27, 1986
Publication Date
February 23, 1988
Inventor
Joseph C Dettling
Howell
NJ, US
Chung Zong Wan
Somerset
NJ, US
Assignee
Engelhard Corporation
NJ, US
IPC
B01J 21/04
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