HIGH PERFORMANCE POLYOXOMETAL CATALYST AND METHOD FOR PRODUCING THE SAME

摘要

Disclosed are a high-performance polyoxometalate catalyst and a method of preparing the same. More particularly, disclosed are a high-performance polyoxometalate catalyst which may enhance activity and selectivity by controlling the content of vanadium, etc. exhibits superior reproducibility, and may produce unsaturated carboxylic acid with high yield and long lifespan from unsaturated aldehyde, and a method of preparing the same.

主权项

1. A polyoxometalate catalyst comprising a metal oxide represented by Formula 1 below:
MoaAbVcBdCeDfOg  [Formula 1] wherein A is at least one element selected from W and Cr, B is at least one element selected from the group consisting of P, As, B, Sb, Ce, Pb, Mn, Nb and Te, C is at least one element selected from the group consisting of Si, Al, Zr, Rh, Cu, Ni, Ti, Ag, Fe, Co and Sn, D is at least one element selected from the group consisting of Na, K, Li, Rb, Cs, Ta, Ca, Mg, Sr and Ba, and a, b, c, d, e, f and g denote an atomic ratio of each element, but, when a=12, b is 0.01 to 15, c is 0.01 to 15, d is 0 to 20, e is 0 to 20, f is 0 to 20, and g is determined according to an oxidation state of each of the ingredients, wherein, in the vanadium (V), a mole ratio of V4+ relative to a sum of V4+ and V5+ is 0.47 to 1.