Bi-containing methacrolein oxidation catalysts
AssigneeThe Standard Oil Company
InventorsWilfrid G. Shaw, James E. Rinz, Christos Paparizos
Life of this patent
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Abstract
Compositions of the empirical formula: Mo.sub.12 P.sub.0.1-3 Bi.sub.0.01-2 M.sub.0.1-3 Cu.sub.0.01-2 V.sub.0.01-3 X.sub.a Y.sub.b O.sub.c where M is at least one of K, Rb and Cs; X is at least one of Ba, Zn, Ga, Cd and Ti when a>0; Y is at least one of Ca, Mg, Ta, Zr, Ce, Ni, Co, Cr, Fe and Tl when b>0; a is a number of 0 to about 2; b is a number of 0 to about 2; and c is a number that satisfies the valence requirements of the other elements present, are excellent catalysts for the oxidation of methcrolein to methacrylic acid.
Claims10
A catalytic composition of the empirical formula:
- Mo.sub.12 P.sub.0.1-3 Bi.sub.0.1-2 M.sub.0.1-3 Cu.sub.0.1-2 V.sub.0.1-3 X.sub.a Y.sub.b O.sub.c (I)
- wherein
- M is at least one of K, Rb and Cs;
- X is at least one of Ba, Zn, Ga, Cd and Ti;
- Y is at least one of Ca, Mg, Ta, Zr, Ce, Ni, Co, Fe and Tl when b>0;
- a is a number greater than 0;
- b is a number of 0 to about 2;
- and
- c is a number that satisfies the valence requirements of the other elements present.
Dependencies are inferred from the claim text.