Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2011-06-28
2011-06-28
Silverman, Stanley (Department: 1736)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S304000, C502S324000, C502S338000, C502S349000, C502S352000, C423S239100
Reexamination Certificate
active
07968492
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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PCT/US2010/034236; International Search Report and Written Opinion; Jan. 26, 2011; 8 pages.
Dunlap Codding P.C.
Millennium Inorganic Chemicals, Inc.
Silverman Stanley
Zimmer Anthony J
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