Process for removing nitrogen oxides from oxygen rich exhaust gas
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United States of America Patent
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Sep 12, 1995
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N/A
app pub date -
Dec 3, 1993
filing date -
Dec 3, 1992
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Abstract
A process for removing nitrogen oxides from oxygen rich exhaust gas containing nitrogen oxides and hydrocarbons using a catalyst composed of at least one active metal and zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 15, treated with a vapor of at least one silicon compound selected from alkylchlorosilanes, alkoxysilanes, alkoxyalkylsilanes, and silicon tetrachloride or treated with an alkoxysilane or silicon tetrachloride in an organic solvent.
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