Pre-pressuring methanol-cobalt with carbon monoxide in homologat

Details Pre-pressuring methanol-cobalt with carbon monoxide in homologat Pre-pressuring methanol-cobalt with carbon monoxide in homologat

1978-03-06

1981-08-11

Evans, Joseph E.

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

Organic compounds

Oxygen containing

C07C 2700, C07C 2936

Patent

active

042835828

ABSTRACT:
An improved process is described for synthetically converting methanol to ethanol in which a mixture of methanol and cobalt catalyst is pre-pressurized with an atmosphere of carbon monoxide at room temperature and at a pressure of about 10 to 1000 psi gauge, in a suitable pressure vessel. A gaseous mixture of carbon monoxide/hydrogen, in the stoichiometric 1:2 molar ratio, is then introduced to react with the methanol/cobalt catalyst mixture and the temperature is raised to about 175.degree. to 240.degree. C. at a pressure of about 3000-6000 psig. The improved process leads to higher selectivities of ethanol formation with lowered amounts of by-products.

REFERENCES:
patent: 3285948 (1966-11-01), Butter

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