Silver- and vanadium-containing multimetal oxide and its use

Details Silver- and vanadium-containing multimetal oxide and its use Silver- and vanadium-containing multimetal oxide and its use

2005-02-01

2005-02-01

Tsang, Cecilia (Department: 1625)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

C502S347000, C429S219000, C429S231500, C549S248000, C549S239000, C423S604000

Reexamination Certificate

active

06849574

ABSTRACT:
A multimetal oxide of the formula Iin-line-formulae description="In-line Formulae" end="lead"?Aga−bMbV2Ox*c H2O,  Iin-line-formulae description="In-line Formulae" end="tail"?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 andb is from 0 to 0.5, with the proviso that the difference (a−b)≧0.1 andc is from 0 to 20 andx is a number determined by the valence and amount of elements different from oxygen in the formula I,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 Å.Precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are also provided.

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