A multi-step process for the production of bio-based 1,5-pentanediol and 1,3-propanediol
By esterification and hydrogenation of dihydropyran and 3-hydroxypropionic acid, the problems of raw material shortage and harsh conditions in the production of 1,5-pentanediol and 1,3-propanediol have been solved, realizing the green and efficient production of bio-based terminal diols.
CN118063286BActive Publication Date: 2026-06-26DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN INSTITUTE OF CHEMICAL PHYSICS CHINESE ACADEMY OF SCIENCES
- Filing Date
- 2022-11-14
- Publication Date
- 2026-06-26
Smart Images
Figure BDA0003941197160000021
Abstract
The present application relates to a method for producing bio-based 1,5-pentanediol and 1,3-propanediol from dihydropyran and 3-hydroxypropionic acid as raw materials under mild conditions, which synthesizes bio-based 1,5-pentanediol and 1,3-propanediol through acid-catalyzed addition esterification and noble metal-catalyzed hydrogenation reaction from dihydropyran and 3-hydroxypropionic acid as raw materials. The present application comprises the following steps: 1) the addition reaction of raw material dihydropyran and 3-hydroxypropionic acid on a strong solid acid catalyst to generate tetrahydropyran hydroxypropionic acid ester; 2) the ester hydrogenation reaction of tetrahydropyran hydroxypropionic acid ester on a noble metal hydrogenation catalyst to produce target products 1,5-pentanediol and 1,3-propanediol under a hydrogen atmosphere.
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