| abstract |
Compositions of the empirical formula: n n Mo.sub.12 P.sub.0.1- Te.sub.0.01-2 M.sub.0.1-3 M'.sub.0.01-3 X.sub.a n n O b n where n M is at least one of K, Rb and Cs; n M' is at least one of Cu and V; n X is at least one of Ba, Zn, Ga, Nb, Cd, Ti, Ca, Bi, Mg, Ta, Zr, Ce, Ni, Co, Cr, Fe and Tl when a>0; n a is a number of 0 to about 2; and n b is a number that satisfies the valence requirements of the other elements present, n are excellent catalysts for the oxydehydrogenation of saturated, lower aliphatic acids and esters to the corresponding unsaturated acids and esters. |