Gamma-butyrolactone prepared by continuous hydrogenation of maleic anhydride and a method for preparing the same
By using a combination of nickel-copper catalyst and porous carbon/molybdenum disulfide support, the problems of high cost of noble metal catalysts and low activity of nickel-based catalysts were solved, and the preparation of high-purity γ-butyrolactone was achieved, reducing production costs and improving reaction selectivity.
CN119569684BActive Publication Date: 2026-06-05POLYCARBONATE OXYGEN NEW MATERIAL TECH (WUXI) CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- POLYCARBONATE OXYGEN NEW MATERIAL TECH (WUXI) CO LTD
- Filing Date
- 2024-11-20
- Publication Date
- 2026-06-05
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Figure BDA0005142598210000091
Abstract
The present application relates to a kind of maleic anhydride continuous hydrogenation preparation γ-butyrolactone and its preparation method.The prepared maleic anhydride solution and hydrogen are continuously introduced into the fixed bed containing nickel-copper catalyst to carry out hydrogenation reaction, the obtained crude product is introduced into separation column to carry out separation and purification, and γ-butyrolactone is obtained.The purity of the obtained γ-butyrolactone is ≥99.99%, and the rest is impurity;The impurity includes tetrahydrofuran and 1,4-butanediol;The content of tetrahydrofuran is ≤0.003%;The content of 1,4-butanediol is ≤0.004%.
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