Patent ID: 8053386

Claim:
A heteropoly acid catalyst represented by the following formula 1, PMo 12 V a Cs b K c X d Y e (Q(PO 4 ) f ) g O x [Formula 1] Wherein, X is one or more metal components selected from the group consisting of Cu, Ag, Co, Pb, Mn and Tl; Y is one or more metal components selected from the group consisting of As, Sb, Bi, Zn and Nb; Q is one or more metal components selected from the group consisting of Cr, La, Ce, Fe, Ni and Mg; a is 0.1<a<3; b is 0.5<b<3; c is 0<c<1; d is 0<d<3; e is 0<e<3; f is 0.5<f<3; g is 0.001<g<3; x is the number satisfied with atomic values of a, b, c, d, e, f and g.