Process for preparing acetone from isobutyraldehyde

Details Process for preparing acetone from isobutyraldehyde Process for preparing acetone from isobutyraldehyde

1978-12-27

1980-04-29

Morgenstern, Norman

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 4500

Patent

active

042005892

ABSTRACT:
This is an improvement in the process for preparing acetone by the catalytic, oxidative decarbonylation of isobutyraldehyde in the gaseous phase by passing a mixture consisting of isobutyraldehyde, oxygen and an inert diluent, when desired, at higher temperatures and at contact-times from 0.1 to 10 seconds over a carrier catalyst where the novel catalyst contains a mixture of copper oxide or manganese oxide, or a mixture thereof, with zinc oxide.
A mixture comprising about 1 to 4.5 vol. % of isobutyraldehyde, about 1.2 to 99 vol. % of oxygen and an inert diluent, when desired, is passed over a catalyst at a temperature of about 130.degree. to 180.degree. C., consisting of about 0.1 to 6% by weight of Cu or Mn, or a mixture thereof, in the form of their oxides and of about 1 to 10% by weight of Zn in the form of zinc oxide on aluminum oxide as the carrier.

REFERENCES:
patent: 3767711 (1973-10-01), Gobron et al.
patent: 3855304 (1974-12-01), Sakakibara et al.
patent: 3966822 (1976-06-01), Fukui et al.
patent: 4000199 (1976-12-01), Obenaus et al.

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