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Selective oxidation of alkanes and/or alkenes to valuable oxygenates

United States Patent

7,888,281
February 15, 2011
View the Complete Patent at the US Patent & Trademark Office
A catalyst, its method of preparation and its use for producing at least one of methacrolein and methacrylic acid, for example, by subjecting isobutane or isobutylene or a mixture thereof to a vapor phase catalytic oxidation in the presence of air or oxygen. In the case where isobutane alone is subjected to a vapor phase catalytic oxidation in the presence of air or oxygen, the product is at least one of isobutylene, methacrolein and methacrylic acid. The catalyst comprises a compound having the formula A.sub.aB.sub.bX.sub.xY.sub.yZ.sub.zO.sub.o wherein A is one or more elements selected from the group of Mo, W and Zr, B is one or more elements selected from the group of Bi, Sb, Se, and Te, X is one or more elements selected from the group of Al, Bi, Ca, Ce, Co, Fe, Ga, Mg, Ni, Nb, Sn, W and Zn, Y is one or more elements selected from the group of Ag, Au, B, Cr, Cs, Cu, K, La, Li, Mg, Mn, Na, Nb, Ni, P, Pb, Rb, Re, Ru, Sn, Te, Ti, V and Zr, and Z is one or more element from the X or Y groups or from the following: As, Ba, Pd, Pt, Sr, or mixtures thereof, and wherein a=1, 0.05<b<1.5, 0.01<x<1, 0<y<0.5, 0<z<0.2 and o is dependent on the oxidation state of the other elements.
Lin; Manhua (Maple Glen, PA), Pillai; Krishnan S. (North Brunwick, NJ)
Evernu Technology, LLC (Warminster, PA)
12/ 016,264
20080177106
January 18, 2008
STATEMENT REGARDING FEDERAL SPONSORED RESEARCH OR DEVELOPMENT The present invention was made with funds provided by the United State Department of Energy under Grant No. DE-FG02-02ER83420. The U.S. Government has certain rights in this invention.