06294140 is referenced by 67 patents and cites 18 patents.

A catalyst for treating exhaust gas from an internal combustion engine includes a carrier body coated with an inner layer and an outer layer. The inner layer includes platinum deposited on a first support material and on a first oxygen storage component, and the outer layer includes platinum and rhodium deposited on a second support material and on a second oxygen storage component. The first and second support materials may be the same or different, and may be selected from the group of: silica, alumina, titania, zirconia, mixed oxides or mixtures thereof, and zirconia-rich zirconia/ceria mixed oxide. The first and second oxygen storage components may include ceria-rich ceria/zirconia mixed oxide compounds, optionally including praseodymia, yttria, neodymia, lanthana or mixtures thereof.

Title
Layered noble metal-containing exhaust gas catalyst and its preparation
Application Number
9/409744
Publication Number
6294140 (B1)
Application Date
October 1, 1999
Publication Date
September 25, 2001
Inventor
Egbert Lox
Hanau
US
Thomas Kreuzer
Karben
US
Michael Harris
M√ľnster
US
Dieter Lindner
Hanau
US
Lothar Mussmann
Offenbach
US
Agent
Smith Gambrell & Russell
US
Assignee
Degussa
US
IPC
B01D 53/94
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