BISMUTH-CONTAINING CATALYST COMPOSITIONS OF USE IN THE OXIDATION OF METHACROLEIN, PRODUCTION THEREOF AND OXIDATION OF METHACROLEIN UTILIZING THEM

摘要

Catalytic compositions of the empirical formula:… Mo12 P0.1-3 Bi0.01-2 M0.1-3 Cu0.01-2 V0.01-3 Xa YbOc… 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 methacrolein to methacrylic acid.