NOx-trap

Details NOx-trap NOx-trap

2007-10-30

2007-10-30

Langel, Wayne A. (Department: 1754)

Power plants

Internal combustion engine with treatment or handling of...

Methods

C060S299000, C060S301000, C422S170000, C422S171000, C422S177000, C423S213500, C423S239100, C423S245100, C428S457000, C428S472000, C428S688000, C428S689000, C502S302000, C502S303000, C502S304000, C502S306000, C502S324000, C502S326000, C502S327000, C502S527190

Reexamination Certificate

active

10380597

ABSTRACT:
A NOx-trap composition comprises: (a) at least one first NOx storage component comprising at least one alkali metal supported on at least one first support material; and (b) a platinum oxidation catalyst and at least one second NOx storage component not being an alkali metal supported on at least one second support material, whereby the platinum oxidation catalyst and the at least one alkali metal are physically segregated thereby susbtantially maintaining the hydrocarbon conversion activity of the platinum oxidation catalyst.

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