Exhaust gas purifying catalyst and process for purifying...

Details Exhaust gas purifying catalyst and process for purifying... Exhaust gas purifying catalyst and process for purifying...

2008-07-08

2008-07-08

Wood, Elizabeth D (Department: 1793)

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

C502S060000, C423S213200, C423S239200

Reexamination Certificate

active

10535511

ABSTRACT:
An exhaust gas purifying catalyst contains copper oxide, ZSM-5 and/or zeolite β, and an oxide of magnesium and/or calcium is further added thereto. A process for purifying an exhaust gas using such a catalyst is also included. By using the catalyst, NOx in an exhaust gas containing much oxygen such as exhaust gas of diesel engines can be efficiently removed and oxidation of SO2under high-temperature conditions can be suppressed.

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