C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 53/08 (2006.01) C07C 51/12 (2006.01)
Patent
CA 2223133
A process for the production of a carboxylic acid having n+1 carbon atoms comprises (a) carbonylating with carbon monoxide in a first reaction zone at elevated temperature and pressure an alkyl alcohol having n carbon atoms and/or a reactive derivative thereof to produce a carboxylic acid having n+1 carbon atoms in a liquid reaction composition comprising carboxylic acid product, an iridium catalyst, an alkyl halide co-catalyst, water, an ester of the carboxylic acid product and the alkyl alcohol, and optionally one or more promoters, (b) withdrawing from the first reaction zone at least a portion of the liquid reaction composition together with dissolved and/or entrained carbon monoxide, and passing at least a portion of the withdrawn liquid reaction composition and carbon monoxide to a second reaction zone, ((c)reacting at least 1 % of the dissolved and/or entrained carbon monoxide in the withdrawn reaction composition by further carbonylation at elevated temperature and pressure in the second reaction zone to produce further carboxylic acid product.
Morris George Ernest
Sunley John Glenn
Bp Chemicals Limited
Fetherstonhaugh & Co.
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