Selective production of acetic acid with high space-time yield

摘要

An oxide catalyst containing molybdenum, palladium and at least two other elements, e.g. vanadium, niobium, antimony and calcium, is used for the selective production of acetic acid from a mixture of ethane and/or ethylene and oxygen. A process for the selective production of acetic acid from a gaseous feed containing ethane and/or ethylene and oxygen, at elevated temperatures, comprises contacting the gas mixture with a catalyst containing molybdenum (Mo), palladium (Pd) and other elements (X,Y) of composition ratio: MoaPdbXcYd (I), in combination with oxygen. X = Cr, Mn, Nb, Ta, Ti, V, Te and/or W; Y = B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Ir, Cu, Ag, Au, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Nb, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Tl and/or U; a = 1; b = 0.0001-0.01; c = 0.4-1; d = 0.005-1. The space-time yield for oxidation to acetic acid is /- 150 kg/hour/m<3>. An Independent claim is also included for a selective oxidation catalyst.