Method for preparing dimethyl succinate

A technology of dimethyl succinate and disodium succinate, applied in the direction of microorganism-based methods, biochemical equipment and methods, and carboxylate preparation, can solve the problem of low conversion rate of succinic acid and complicated preparation process And other issues
CN104878048AInactive Publication Date: 2015-09-02镇江博睿兴邦生物科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
镇江博睿兴邦生物科技有限公司
Publication Date
2015-09-02
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention relates to a method for preparing dimethyl succinate. The method comprises the following steps: (1) preparing disodium succinate fermented liquid; (2) treating the disodium succinate fermented liquid; and (3) preparing dimethyl succinate by using a bipolar-membrane electrodialysis apparatus. The processes such as catalyst cleaning, regeneration, and the removal of a deactivated catalyst, and the like existing in the traditional preparation process are omitted; and the whole reaction process is green and clean, and completely conforms to the operating requirements of the modern chemical industry.
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Description

technical field

[0001] The invention relates to a method for directly preparing dimethyl succinate without purification of succinic acid by using disodium succinate fermentation liquid, and the invention belongs to the technical field of biochemical industry. Background technique

[0002] Succinic acid (succinic acid), also known as succinic acid, widely exists in organisms, is an important dibasic organic carboxylic acid, and is also an important metabolite of the microbial tricarboxylic acid cycle glycolysis pathway. At present, succinic acid can be prepared by microbial fermentation.

[0003] The preparation of traditional succinates is completed by succinic acid and small molecular alcohols (methanol, ethanol, butanol, etc.) under the conditions of strong acid catalysts, high temperature and high pressure; strong acid catalysts include concentrated sulfuric acid, Liquid acids such as fluorosulfonic acid and oleum, and solid acids such as acidic cation exchange resins an...

Claims

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