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

1980-01-21

1982-03-09

Evans, Joseph E.

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

Organic compounds

Oxygen containing

C07C 2932, C07C 2936

Patent

active

043190561

ABSTRACT:
Ethanol is produced by reacting methanol with hydrogen and carbon monoxide at elevated temperature and pressure in the presence of a catalyst comprising cobalt, and iodide or a bromide and a compound having X(A)(B)(C) in which formula X is a nitrogen or phosphorus and A, B and C are individually monovalent organic radicals, or X is phosphorus and any two of A,B and C together form an organic divalent cyclic ring system bonded to the X atom, or X is nitrogen and all of A,B and C form an organic trivalent cyclic ring system bonded to the X atom, and in the additional presence of an added inert liquid which is characterized as a compound capable of forming, under normal conditions of temperature and pressure, a separate phase in the presence of methanol containing up to 20% w/w water, which compound contains in its structure bonds other than carbon/carbon and carbon/hydrogen. Typical of the inert liquids which may be employed are chlorobenzene, decanoic acid, polydimethylsiloxane fluid and methyl phenyl silicone fluid. The addition of the inert liquid suppresses side-reactions and thereby increases the total yield and selectivity to ethanol.

REFERENCES:
patent: 3248432 (1966-04-01), Riley et al.
patent: 4045492 (1977-08-01), Kniese et al.
patent: 4133966 (1979-01-01), Pretzer et al.

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