Patent ID: 8247344

Claim:
A method for producing (meth)acrylic acid using at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl alcohol and methyl-t-butyl ether, wherein a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included) represented by the following Formula 1 is used as a catalyst: Mo a Bi b Nb c A d B e C f D g E h F i O j [Formula 1] wherein Mo represents molybdenum, Bi represents bismuth, and Nb represents niobium; A is at least one element selected from the group consisting of W, Sb, As, P, Sn and Pb; B is at least one element selected from the group consisting of Fe, Zn, Cr, Mn, Cu, Pd, Ag and Ru; C is at least one element selected from the group consisting of Co, Cd, Ta, Pt and Ni; D is at least one element selected from the group consisting of Si, Al, Zr, V and Ce; E is at least one element selected from the group consisting of Se, Ga, Ti, Ge, Rh and Au; F is at least one element selected from the group consisting of Na, K, Li, Rb, Cs, Ca, Mg, Sr, Ba and MgO; each of a, b, c, d, e, f, g, h, i, and j represents the atomic ratio of each element; and wherein a=12, 0.01≦b≦20, 0.001≦c≦20, 0≦d≦15, 0<e≦20, 0<f≦20, 0≦g≦10, 0≦h≦10, 0<i≦10, and j is a value defined by the oxidation state of each of the above elements.