Supported rhodium catalyst, method of preparing same and process

Details Supported rhodium catalyst, method of preparing same and process Supported rhodium catalyst, method of preparing same and process

1993-12-20

1994-11-15

Prescott, Arthur C.

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

Organic compounds

Carboxylic acids and salts thereof

562522, 562607, 502326, 502402, 502439, 502507, C07C 4550, B01J 2340, B01J 2026

Patent

active

053649630

ABSTRACT:
A methanol carbonylation catalyst includes a rhodium complex supported on a porous, cross-linked vinylpyridine resin, wherein the vinylpyridine resin has a cross-linking degree of 30-60%, a pore volume of 0.1-0.4 ml/g and an average pore diameter of 20-100 nm. The catalyst may be prepared by contacting the pyridine ring-containing resin with an aqueous solution containing rhodium ion and then contacting the resulting rhodium ion-carrying resin with carbon monoxide and an alkyl iodide in an organic solvent to convert the rhodium ion to a rhodium complex bound to the resin. Acetic acid is produced by reacting carbon monoxide with methanol at a temperature of 140.degree.-250.degree. C. and a partial pressure of carbon monoxide of 7-30 kg/cm.sup.2 in the presence of an alkyl iodide and the above catalyst.

REFERENCES:
patent: 3769329 (1973-10-01), Paulik et al.
patent: 4328125 (1982-05-01), Drago et al.
patent: 5155261 (1992-10-01), Marston et al.

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