Nitrogen oxide removal catalyst system and nitrogen oxide...

Details Nitrogen oxide removal catalyst system and nitrogen oxide... Nitrogen oxide removal catalyst system and nitrogen oxide...

2005-02-01

2009-10-06

Vanoy, Timothy C (Department: 1793)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

C423S213500, C423S213700, C423S239100, C423S239200, C422S168000, C422S169000, C422S170000, C422S171000, C422S177000, C422S180000, C060S299000, C060S301000

Reexamination Certificate

active

07597865

ABSTRACT:
Provided in a catalyst system are: a first reaction part fitted with a first catalyst containing, as active constituents, at least, a complex oxide consisting of two or more oxides selected from among silica, alumina, titania, zirconia, and tungsten oxide, and a rare earth metal or transition metal (except Cu, Co, Ni, Mn, Cr, and V); and a second reaction part fitted with a second catalyst containing, as active constituents, at least, a noble metal and a silica-alumina type complex oxide.

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