05948723 is referenced by 46 patents and cites 55 patents.

A catalyst composition and layered catalyst composite of the type generally referred to as a three-way conversion catalyst having the capability of substantially simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides. The catalyst composition comprises at least two supports, at least one first precious metal component. There is at least one lanthana stabilized alumina support, and at least one refractory oxide unstabilized support. The composition further comprises at least one precious metal component located on the lanthana stabilized alumina support and the unstabilized support. There is an oxygen storage composition comprising, 40 to 80 weight percent of a diluent component, 10 to 60 weight percent of a cerium component, 1 to 15 weight percent of a neodymium component, and 1 to 15 weight percent of a praseodymium component. The composition also comprises at least one alkaline earth metal stabilizer; and a zirconium component.

Title
Layered catalyst composite
Application Number
706480
Publication Number
5948723
Application Date
October 31, 1997
Publication Date
September 7, 1999
Inventor
Shiang Sung
New York
NY, US
Assignee
Engelhard Corporation
NJ, US
IPC
B01J 23/56
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