| 摘要 |
A process for selectively preparing acetic acid from a feed gas substance such as ethane, ethylene or mixtures thereof, as well as oxygen, at an increased temperature, is disclosed. The feed gas substance is brought together with a catalyst which contains the elements Mo, Pd, X and Y in the gram-atomic ratio a:b:c:d in combination with oxygen, according to formula (I) in which MoaPdbXcYd. The symbols X and Y have the following meanings: X stands for one or several elements selected from the group composed of Cr, Mn, Nb, Ta, Ti, V, Te and/or W, in particular Nb, V and W; Y stands for one or several elements selected from the group composed of B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Cu, Rh, Ir, Au, Ag, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Sr, Ba, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Tl and U, in particular Ca, Sb, Te and Li. Also disclosed is a catalyst for selectively preparing acetic acid which contains the elements Mo, Pd, X and Y in the gram-atomic ratio a:b:c:d in combination with oxygen. The indices a, b, c and x represent the gram-atomic ratio of the corresponding elements, and a = 1; b > 0, and d = 0.05-2. |
