Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1983-08-18
1988-03-22
Garner, Vivian
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
2604109R, 260413, 560 8, 560 97, 560105, 560109, 560114, 560204, 560232, 562406, 562497, 562517, 562520, 562522, C07C 5110, C07C 5112, C07C 5308, C07C 6736, C07C 6737
Patent
active
047330066
ABSTRACT:
The present invention provides for an improved process wherein an olefin, an alcohol, or an ester, halide or ether derivative of said alcohol is reacted with carbon monoxide in a liquid phase in the presence of a catalyst system that contains (a) a rhodium component, and (b) and iodine or bromine component. By passing at least a portion of the liquid reaction mass from the reaction zone to a separation zone of substantially lower CO partial pressure, at least a portion of the carbonylation products, as well as unreacted carbon monoxide, inert gases and unreacted olefin, alcohol or alcohol derivatives are vaporized and can be withdrawn from the separation zone. Precipitation of the rhodium catalyst under carbon monoxide deficient conditions is prevented or retarded by addition to the carbon monoxide deficient zones of the system of a catalyst stabilizer which is a germanium (IV) compound, an alkali metal compound, and mixtures thereof.
REFERENCES:
patent: 3579552 (1971-05-01), Craddock et al.
patent: 3818060 (1974-06-01), Forster et al.
patent: 3845121 (1974-10-01), Eubanks et al.
Paulik Frank E.
Singleton Thomas C.
Brooks Wendell W.
Cole Arnold H.
Garner Vivian
Hoffman Arthur E.
Monsanto Company
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