Process for the hydrocarbonylation of methanol to ethanol in the

Details Process for the hydrocarbonylation of methanol to ethanol in the Process for the hydrocarbonylation of methanol to ethanol in the

1979-02-12

1980-05-27

Evans, Joseph E.

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

Organic compounds

Oxygen containing

C07C 3108

Patent

active

042051908

ABSTRACT:
Ethanol is produced by reacting methanol with carbon monoxide and hydrogen at temperatures in the range 150.degree. to 250.degree. C. and pressures greater than 100 bar in the presence of a cobalt catalyst and an additive which is miscible with methanol containing up to 20% w/w water, which additive is an alcohol, an aldehyde, a ketone or an ether. Particular additives are n-propanol, n-butanol, acetone, acetaldehyde, 1,4-dioxane, tetrahydrofuran, di-n-propylether and diphenyl ether. Optionally the catalyst is promoted with iodine or bromine or preferably both iodine or bromine and an organo-phosphorous compound. Other additives such as non-polar solvents, acids and derivatives thereof and inert liquids can be incorporated in the reaction mixture.

REFERENCES:
patent: 2623906 (1952-12-01), Gresham
patent: 3248432 (1966-04-01), Riley et al.
patent: 3285948 (1966-11-01), Butter
patent: 4133966 (1979-01-01), Pretzer et al.
patent: 4150246 (1979-04-01), Taylor
Wender et al., "Science," vol. 113 (1951), pp. 206-207. _

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