Process for preparing isobutene from tert-butanol

Details Process for preparing isobutene from tert-butanol Process for preparing isobutene from tert-butanol

2007-06-26

2007-06-26

Caldarola, Glenn (Department: 1764)

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

C585S638000

Reexamination Certificate

active

10868904

ABSTRACT:
Isobutene is prepared by dissociating tert-butanol into isobutene and water over an acid ion-exchange resin arranged as a fixed bed in at least one reactor at a temperature of from 80 to 150° C. and at a pressure of from 5 to 25 bar to obtain a reaction mixture, separating the reaction mixture into isobutene, a by-product, water and at least one mixture of undissociated tert-butanol and water. The reactor is operated pseudo-isothermally, with a temperature difference between inflowing and outflowing streams of less than 15 K.

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