Catalyzed soot filter

Details Catalyzed soot filter Catalyzed soot filter

2005-07-26

2008-10-21

Greene, Jason M (Department: 1797)

Gas separation

Specific media material

Ceramic or sintered

C055S282300, C055S385300, C055S524000, C055SDIG007, C055SDIG010, C055SDIG030, C095S273000, C095S278000, C060S299000, C060S311000, C422S180000, C264S628000, C264S630000, C264S631000, C264SDIG048

Reexamination Certificate

active

07438739

ABSTRACT:
An improved catalyzed soot filter is comprised of a porous ceramic having, on at least a portion of the porous ceramic, an amorphous catalytic phase comprised of an alkali containing oxide glass having therein Si, Al or combination thereof. The improved catalyzed soot filter may be formed by contacting a porous ceramic such as mullite, silcon carbide or cordierite with an alkali containing compound that is a silicate, aluminate or alumino-siliicate and heating to a temperature sufficient to form an amorphous catalytic phase fused to at least a portion of the porous ceramic.

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