Patent ID: 6333444
Filing Date: 2001-12-25
Classification: B01J

Abstract:
A catalyst composition comprising in combination with oxygen the elements molybdenum, vanadium, niobium and gold in the absence of palladium according to the empirical formula: mO.sub.a W.sub.b Au.sub.c V.sub.d Nb.sub.e Y.sub.f (I) wherein Y is one or more elements selected from the group consisting of: Cr, Mn, Ta, Ti, B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Ir, Cu, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Tl, U, Re, Te and La;a, b, c, d, e and f represent the gram atom ratios of the elements such that:0<a.ltoreq.1; 0.ltoreq.b<1 and a+b=1;10.sup.-5 <c.ltoreq.0.02;0<d.ltoreq.2;0.ltoreq.e.ltoreq.1; and0<f.ltoreq.2.