Pre-reduced hydrogenation catalyst, process for its preparation and use

By preparing a pre-reduced hydrogenation catalyst containing alumina and silica supports, the problems of high catalyst cost and low conversion rate in the hydrogenation of acetic acid to ethanol were solved, achieving high catalyst activity and stability.

CN117943042BActive Publication Date: 2026-07-14CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2022-10-31
Publication Date
2026-07-14

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Abstract

The present application relates to the technical field of hydrogenation catalyst preparation, and discloses a pre-reduction type hydrogenation catalyst and a preparation method and application thereof. The catalyst comprises a carrier and a metal component, the carrier is alumina and / or silicon oxide, the metal component comprises at least one of Mg, Ca and Ba, and Cu, Zn and Mn; based on the total amount of the catalyst, the content of Cu is 25-70 wt% in terms of oxide, the content of Zn is 3-25 wt%, the content of Mn is 2-8 wt%, the content of at least one of Mg, Ca and Ba is 1-10 wt%, and the content of alumina and / or silicon oxide is 5-35 wt%; the number of active centers of the catalyst after re-reduction treatment is 0.025-0.13 mmol of hydrogen gas per gram of catalyst. The catalyst has good reactivation performance, and when used for preparing ethanol by hydrogenation of acetic acid, the catalyst has the advantages of low price and high conversion rate.
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