Method of preparing W or Mo metal oxides

Details Method of preparing W or Mo metal oxides Method of preparing W or Mo metal oxides

1981-03-20

1982-07-13

Thomas, Earl C.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 58, 423 61, 423593, C01G 3902, C01G 4102

Patent

active

043394248

ABSTRACT:
A process for preparing W, Mo or mixed metal oxides thereof by oxidizing a reduced metal oxide of the formula (NH.sub.m R.sub.4-m).sub.q.sup.+ MO.sub.p where each R is independently C.sub.1 -C.sub.20 aliphatic, C.sub.7 -C.sub.14 araliphatic or C.sub.3 -C.sub.8 cycloaliphatic with the proviso that adjacent R's, together with the nitrogen atom to which they are attached, may form a 5, 6 or 7 membered heterocyclic ring, m is an integer from 0 to 4, q is a number from about 0.001 to 1/3, M is W or Mo and p is a number from 2 to 3 with aqueous hydrogen peroxide. The so-treated reduced metal oxide is isolated and heated in an oxygen containing atmosphere to form metal oxides of the formula MO.sub.p.

REFERENCES:
patent: 3848049 (1974-11-01), Ronzio et al.
patent: 4080421 (1978-03-01), Kasserra
R. G. Dickens et al., Trans. Faradaz Soc., vol. 67, pp. 794-800, (1971).
L. Kihlborg et al., Mat. Res. Bull., vol. 14, pp. 667-674, (1979).
T. A. Bither et al., Inorg. Chem., vol. 5, pp. 1159-1562, (1966).
J. Graham et al., Acta Cryst., vol. 14, pp. 379-383, (1961).
B. Gerand et al., J. Solid State Chem., vol. 29, pp. 429-434, (1979).
M. Figlarz et al., 9th International Symposium Reactivity of Solids, Cracow, VI-18, pp. 660-664, (1980).

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