Process for the preparation of gamma-butyrolactone
AssigneeTonen Chemical Corporation
InventorsTatsumi Ichiki, Kaori Mori, Sadakatsu Suzuki, Hiroshi Ueno, Kenji Kobayashi
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Abstract
Gamma-butyrolactone is prepared by catalytic dehydrogenation of 1,4-butanediol in a gaseous phase in the presence of a catalyst comprising copper, chromium, and manganese and/or barium. Improvement is in that the catalyst further contains sodium and/or potassium, whereby formation of by-products is suppressed and high yield, high selectivity and prolonged catalyst life are attained.
Claims14
A process for the preparation of .gamma.-butyrolactone by catalytic dehydrogenation of 1,4-butanediol in a gaseous phase in the presence of a catalyst which contains copper, chromium, and at least one member selected from the group consisting of manganese and barium, characterized in that the catalyst further contains at least one member selected from the group consisting of sodium and potassium.
Dependencies are inferred from the claim text.