Layered Catalyst To Improve Selectivity Or Activity Of Manganese Containing Vanadium-Free Mobile Catalyst
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United States of America Patent
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app pub date -
May 27, 2011
filing date -
May 11, 2009
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Abandoned
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Abstract
Low temperature activity and high temperature ammonia selectivity of a vanadium-free selective catalytic reduction catalyst are controlled with a mixed oxide support containing oxides of titanium and zirconium, and a plurality of alternating layers respectively formed of a metal compound and titanium oxide present on the surface of the mixed oxide support. The metal compound is selected from the group consisting of manganese oxide, iron oxide, cerium oxide, tin oxide, and mixtures thereof.
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