Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs
Reexamination Certificate
2005-03-28
2010-06-01
Wood, Elizabeth D (Department: 1793)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
C502S063000, C502S064000, C502S066000, C502S069000
Reexamination Certificate
active
07727923
ABSTRACT:
The challenge for the present invention is to provide a catalyst composition restrained from declining in performance over time in purifying an exhaust gas containing an organic compound a silicon compound, a catalyst containing the catalyst composition, and a method for producing the catalyst.This challenge is solved by using a catalyst composition containing zeolite added to precious metal-carried alumina, and the silicon resistance of the catalyst is improved greatly. The amount of acid of the zeolite added is preferably in the range of 0.4 mmol·NH3/g to 1.5 mmol·NH3/g.
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PCT International Search Report for PCT/JP/2005/005693, Jul. 5, 2005 (2 pages).
Nakano Yoshiki
Sakurai Takanobu
Fish & Richardson P.C.
Nikki-Universal Co., Ltd.
Wood Elizabeth D
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