Process and catalyst for the production of formaldehyde from met

Details Process and catalyst for the production of formaldehyde from met Process and catalyst for the production of formaldehyde from met

1986-01-06

1987-11-10

Metz, Andrew

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

Catalyst or precursor therefor

Silicon containing or process of making

502171, 423335, 423338, 423339, B01J 2108, B01J 3100, C01B 3312

Patent

active

047057718

ABSTRACT:
Formaldehyde is made from methane and a molecular oxygen containing gas by using a silica supported catalyst having less than 350 parts per million by weight of sodium and having a catalytically effective amount of MoO.sub.3. The low sodium form of the silica support can be made by washing silica gel or precipitated silica, by using a fumed silica or by making an ultrapure form of silica having a silica purity of at least 99.99% silica. The ultrapure form can be made by the hydrolysis of silicon tetraalkoxides. In general, the lower the sodium level, the better is the catalyst.

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Partial Oxidation of Methane by NO.sub.2 and ZnO on SiO.sub.2, Liu et al, J. Am. Chem. Soc., 1984, vol. 106, #15, p. 4117.
Partial Oxidation of Methane by NO.sub.x ones ZnO O.sub.3 supported on SiO.sub.2, Liu et al, Dept. of Chem., Texas A & M U., Coll. St., Tex., J. Chem. Soc. Chem. Commun., 1982, pp. 78-79.

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