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

1985-04-16

1986-08-19

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 4533

Patent

active

046071270

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.

REFERENCES:
patent: 2102160 (1937-12-01), Nashan
patent: 2376668 (1945-05-01), Derby
patent: 2625519 (1953-01-01), Hartig
patent: 3996294 (1976-12-01), Imre et al.
patent: 4243613 (1981-01-01), Brockhaus et al.
R. S. Liu, M. Iwamoto and J. H. Lunsford, J. Chem. Soc., Chem. Commun., 1982, pp. 78-79.
H. F. Liu, R. S. Liu, K. Y. Liew, R. E. Johnson and J. H. Lunsford, J. Am. Chem. Soc., 1984, vol. 106, No. 15, pp. 4117-4121.

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