06248684 is referenced by 56 patents and cites 154 patents.

Oxidation catalyst compositions for treating diesel exhaust include ceria and, optionally, alumina, each having a surface area of at least about 10 m

2

/g, and a zeolite, e.g., Beta zeolite. Optionally, platinum may be included in the catalytic material, preferably in amounts which are sufficient to promote some gas-phase oxidation of carbon monoxide (“CO”) and hydrocarbons (“HC”) but which are limited to preclude excessive oxidation of SO

2

to SO

3

. Alternatively, palladium in any desired amount may be included in the catalytic material. The zeolite is optionally doped, e.g., ion-exchanged, with one or more of hydrogen, a platinum group metal or other catalytic metals. The catalyst compositions may be used in a method to treat diesel engine exhaust by contacting the hot exhaust with the catalyst composition to promote the oxidation of gas-phase CO and HC and of the volatile organic fraction component of particulates in the exhaust.

Title
Zeolite-containing oxidation catalyst and method of use
Application Number
8/255289
Publication Number
6248684 (B1)
Application Date
June 7, 1994
Publication Date
June 19, 2001
Inventor
Robert J Farrauto
Westfield
NJ, US
John R Adomaitis
Old Bridge
NJ, US
Michel Deeba
North Brunswick
NJ, US
Kenneth E Voss
Somerville
NJ, US
Bulent O Yavuz
Plainfield
NJ, US
Assignee
Englehard Corporation
NJ, US
IPC
B01J 29/06
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