Vapor phase catalytic process for preparing alpha, beta-ethyleni

Details Vapor phase catalytic process for preparing alpha, beta-ethyleni Vapor phase catalytic process for preparing alpha, beta-ethyleni

1976-05-12

1977-04-26

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

252444, 252449, 252461, 260601R, C07C 2914

Patent

active

040201163

ABSTRACT:
There is disclosed a selective process for preparing alpha, beta-ethylenically unsaturated alcohols such as allyl alcohol in the vapor phase. This process comprises reacting an alpha, beta-ethylenically unsaturated aldehyde such as acrolein with a hydrogen-containing gas in the vapor phase in the presence of a supported partially decomposed rhenium catalyst. A preferred catalyst comprises the partial decomposition product of rhenium decacarbonyl and a large pore diameter support material such as controlled pore size type glass.
A particularly selective vapor phase reduction results when the reaction is carried out in the presence of a critical amount of a selective catalyst poison such as carbon monoxide or carbon disulfide. This selective catalyst poison substantially inhibits the conversion of reactant to undesired product but does not substantially interfere with the conversion of reactant to the desired products.

REFERENCES:
patent: 2763696 (1956-09-01), Finch et al.
patent: 2767221 (1956-10-01), Ballard et al.
patent: 3284517 (1966-11-01), Rylander et al.
patent: 3655777 (1972-04-01), Rylander et al.
Broadbent et al., "J. Org. Chem." vol. 24 (1959), pp. 1847-1854.
Davenport et al., "Ind. & Eng. Chem.", vol. 60 (1968), pp. 10-19.

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