Title:
PRODUCTION OF CATALYST COMPOSITION
Document Type and Number:
Japanese Patent JPS637841
Kind Code:
A
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 CeO2) ceria and may be admixed with activated alumina having one or more platinum group metal catalytic components dispersed thereon. The catalyst material may be coated onto 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.
Inventors:
CHIYUN TSUON WAN
JIYOSEFU SHII DETSUTORINGU
JIYOSEFU SHII DETSUTORINGU
Application Number:
JP15795887A
Publication Date:
January 13, 1988
Filing Date:
June 26, 1987
Export Citation:
Assignee:
ENGELHARD CORP
International Classes:
B01D53/94; B01J23/10; B01J23/56; B01J23/63; B01J23/64; B01J23/89; (IPC1-7): B01D53/36; B01J23/56; B01J23/64; B01J23/89
Domestic Patent References:
| JPS6291244A | 1987-04-25 |
Attorney, Agent or Firm:
Heikichi Odashima
Next Patent: LAYER-2 PROTOCOL PROCESSING LSI