Patent Number: 7,956,200

Title: Silver- and vanadium-containing multimetal oxide and its use

Abstract: A multimetal oxide of the formula I Ag.sub.a-bM.sub.bV.sub.2O.sub.x*cH.sub.2O, I where M is a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca, Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni and/or Mo, a is from 0.3 to 1.9 and b is from 0 to 0.5, with the proviso that the difference (a-b).gtoreq.0.1 and c is from 0 to 20 and x is a number determined by the valence and amount of elements different from oxygen in the formula I, which has a crystal structure giving an X-ray powder diffraction pattern which displays reflections at the lattice spacings d of 15.23.+-.0.6, 12.16.+-.0.4, 10.68.+-.0.3, 3.41.+-.0.04, 3.09.+-.0.04, 3.02.+-.0.04, 2.36.+-.0.04 and 1.80.+-.0.04 .ANG.. Precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are also provided.

Inventors: Heidemann; Thomas (Weinheim, DE), Hibst; Hartmut (Schriesheim, DE), Bauer; Stefan (Ludwigshafen, DE), Dietrich; Ulf (Grunstadt, DE)

Assignee: BASF Aktiengesellschaft

International Classification: C07D 307/89 (20060101); C07C 51/255 (20060101)

Expiration Date: 2019-06-07 0:00:00