Process for the carbonylation of an alcohol and/or a reactive de

Details Process for the carbonylation of an alcohol and/or a reactive de Process for the carbonylation of an alcohol and/or a reactive de

1996-08-09

1999-06-29

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

560129, C07C 5112, C07C 6900

Patent

active

059170891

ABSTRACT:
A carbonylation process which comprises (a) contacting, in a first carbonylation reactor at elevated temperature and pressure, an alcohol having n carbon atoms and/or a reactive derivative thereof with carbon monoxide in a liquid reaction composition comprising a halogen and/or halogen compound promoter and a Group VIII noble metal carbonylation catalyst to produce a carbonylation product comprising a carboxylic acid having n+1 carbon atoms and/or an ester of the carboxylic acid having n+1 carbon atoms and the alcohol having n carbon atoms and/or any anhydride of the carboxylic acid having n+1 carbon atoms, (b) withdrawing from the first carbonylation reactor, an off-gas stream comprising carbon monoxide and optionally halogen and/or halogen compound promoter, and optionally carbonylation production; and (c) contacting in a second carbonylation reactor, the withdrawn off-gas stream with an alcohol having m carbon atoms and/or reactive derivative thereof in the presence of a halogen and/or halogen compound promoter and a heterogenous carbonylation catalyst comprising a supported Group VIII noble metal to produce a further carbonylation product comprising a carboxylic acid having m+1 carbon atoms and/or an ester of the carboxylic acid having m+1 carbon atoms and the alcohol having m carbon atoms and/or an anhydride of the carboxylic acid having m+1 carbon atoms.

REFERENCES:
patent: 2743296 (1956-04-01), Painter et al.
patent: 5189203 (1993-02-01), Hansen et al.
patent: 5510523 (1996-04-01), Yamaseki et al.
patent: 5510524 (1996-04-01), Garland et al.

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