Patent ID: 6790983
Filing Date: 2004-09-14
Classification: C07C,Y02P

Abstract:
An integrated process for the production of vinyl acetate comprising the steps of:(d) contacting in a first reaction zone a gaseous feedstock comprising essentially ethane with a molecular oxygen-containing gas in the presence of a catalyst to produce a first product stream comprising acetic acid and ethylene; (e) contacting in a second reaction zone the first gaseous product stream with a molecular oxygen-containing gas in the presence of a catalyst to produce a second product stream comprising vinyl acetate; (f) separating the product stream from step (b) and recovering vinyl acetate from the product stream from step (b), wherein the catalyst in the first reaction zone has the formula MoaPbbXcYd wherein:X is at least one element selected from the group consisting of Cr, Mn, Nb, Ta, Ti, V, Te and W; Y is least one element selected from the group consisting of 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, Ti and U and wherein a, b, c and d are gram atom ratios and denote a=1; b=0.0001-0.01; c=0.4-1; d=0.005-1.