High yield, low byproduct .alpha., .beta.-unsaturated aldehydes

Details High yield, low byproduct .alpha., .beta.-unsaturated aldehydes High yield, low byproduct .alpha., .beta.-unsaturated aldehydes

1976-07-07

1982-06-15

Lone, Werren B.

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

Organic compounds

Oxygen containing

568476, 568478, 562546, 562547, C07C 4534

Patent

active

043352642

ABSTRACT:
The catalytic vapor phase oxidation of an olefin of 3 to 5 carbon atoms to .alpha.,.beta.-unsaturated aldehydes with the formation of substantially no .alpha.,.beta.-unsaturated acids is achieved by contacting the olefin, oxygen, an inert gas or moderator and optionally water with a catalyst at a temperature of from 300.degree. C. to 500.degree. C. for a period of time sufficient to achieve from 25 to 80% conversion of said olefin to said aldehyde, separating unreacted olefin and byproduct inert gas from the product stream and recycling the unreacted olefin and byproduct inert gas together with additional olefin and oxygen if required to react with said catalyst.

REFERENCES:
patent: 3524823 (1970-08-01), Eden et al.
patent: 3565826 (1971-02-01), Sennewald et al.
patent: 3716496 (1973-02-01), Yoshino et al.
patent: 3799978 (1974-03-01), Ohara et al.
patent: 3804903 (1974-04-01), Hagiwara
patent: 3825502 (1974-07-01), Takenaka et al.
patent: 4001317 (1977-01-01), Grasselli et al.
patent: 4035418 (1977-07-01), Okada et al.

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