Purification of carbonylation products

Details Purification of carbonylation products Purification of carbonylation products

1976-10-12

1978-07-25

Garner, Vivian

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260410, 2604109R, 260413, 260419, 260514M, 260515P, 260515R, 260525, 260533AN, 260537R, 260540, 260541, 560 78, 560 79, 560 97, 560105, 560109, 560114, 560191, 560204, 560232, 560233, C07C 5110, C07C 5112, C07C 5144, C07C 6736

Patent

active

041029224

ABSTRACT:
A method is provided for the removal of contaminating alkanes from the vaporized carbonylation products of a process wherein carboxylic acids are produced by the reaction in the liquid phase of an alcohol or an ester, halide or ether derivative of said alcohol with carbon monoxide in the presence of a catalyst system containing a rhodium or iridium component and an iodine or bromine component. The method involves distillation of the alkane-containing vaporized carbonylation products, phase separation of the overhead from said distillation, further distillation of a slipstream of the resulting heavy phase using carbon monoxide as stripping gas and removal of the alkanes as the bottoms stream from the latter distillation.

REFERENCES:
patent: 3769329 (1973-10-01), Paulik et al.
patent: 3772380 (1973-11-01), Paulik et al.
patent: 3845121 (1974-10-01), Eubanks et al.

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