Formaldehyde manufacturing process

Details Formaldehyde manufacturing process Formaldehyde manufacturing process

1976-01-20

1978-02-28

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260606, C07C 4516

Patent

active

040767540

ABSTRACT:
In a process for the manufacture of formaldehyde by the silver-catalyzed oxidation of methanol in two stages, a composite catalyst is used in the second oxidation stage, which is prepared by sintering an upstream layer of foraminous silver having a void volume of 75 to 90% contiguous to a downstream layer of crystalline silver particles having a void volume of 65 to 75% which is at least about 5% below the void volume of the upper layer.

REFERENCES:
patent: 2462413 (1949-02-01), Meath
patent: 3928461 (1975-12-01), Diem

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