US US2008045405A1

Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function

Publication no.

US2008045405A1
Priority date
2006-06-09
Filing date
2006-06-09
Published
2008-02-21
Assignee
BASF CATALYSTS LLC [US]
Inventors

BEUTEL TILMAN WOLFRAM [US], DETTLING JOSEPH CHARLES [US], HOLLOBAUGH DUSTIN OWEN [US], MUELLER TORSTEN WOLFGANG [DE]

Abstract

The present invention is directed to a diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx). More particularly, the present invention is directed to a novel washcoat composition comprising two distinct washcoat layers containing two distinctly different ratios of Pt:Pd.

Classification

C08F4/02AI
B01J21/00AI
B01J23/40AI
B01J23/42AI
B01J23/44AI
B01J29/00AI
B01J23/44
B01J29/7007
B01J35/19
B01J37/0244
B01J37/0248
F01N3/0231

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