Inventors:
Christie Susan Ragle - Havana IL, US
Ronald G. Silver - Peoria IL, US
Svetlana Mikhailovna Zemskova - Edelstein IL, US
Colleen J. Eckstein - Metamora IL, US
Assignee:
Caterpillar Inc. - Peoria IL
International Classification:
B01D 46/00
B01D 53/56
B01D 53/62
B01D 53/72
B01D 53/94
US Classification:
4232132, 4232135, 4232391, 4232453, 423247, 60299, 95285, 55524, 55525, 55DIG 30
Abstract:
A method of providing an exhaust treatment device is disclosed. The method includes applying a catalyst including gold and a platinum group metal to a particulate filter. The concentration of the gold and the platinum group metal is sufficient to enable oxidation of carbon monoxide and nitric oxide.