Title:
CATALYTIC MATERIAL HAVING IMPROVED CONVERSION PERFORMANCE
Document Type and Number:
WIPO Patent Application WO1999056876
Kind Code:
B1
Abstract:
A novel catalytic material is prepared by dispersing a catalytically active species, e.g., one or more platinum group metals, on a support phase that contains a high porosity, meso-pores high surface area (HPMPHSA) material. The HPMPHSA material has a porosity, measured in millilitres per gram of material, that is typically at least about 30 percent greater than that of a corresponding conventional material, preferably at least 50 percent greater. In a particular embodiment, the support phase of the catalytic material contains a HPMPHSA alumina having porosity of about 0.9ml/g, whereas a conventional alumina typically has a porosity of about 0.45 ml/g. The surface area is above 90, preferably above 100, more preferably equal or above 150 to 160 m<2>/g. The support phase may be wholly composed of the HPMPHSA material or it may be composed of a mixture of the HPMPHSA material and a conventional material. Such a mixture preferably contains at least about 20 percent HPMPHSA material, by weight, e.g., 20 to 50 percent by weight.
Inventors:
CHEN SHAU-LIN F
RABINOWITZ HAROLD N
KIM CHONG
RABINOWITZ HAROLD N
KIM CHONG
Application Number:
PCT/US1999/009022
Publication Date:
December 09, 1999
Filing Date:
April 26, 1999
Export Citation:
Assignee:
ENGELHARD CORP (US)
International Classes:
B01D53/94; B01D53/86; B01J23/40; B01J32/00; B01J35/10; (IPC1-7): B01J35/10; B01J23/40; B01D53/86; B01D53/94
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