A method for the synthesis of N-vinyl carboxylic acid amides
By using a catalytic loading system of Fe3O4@SiO2@ZSM-5-SO3H solid acid catalyst and phenylboronic acid-4-methoxypyridine composite stabilizer, along with tubular ZSM-5 molecular sieve membrane separation technology, the problems of numerous side reactions and high energy consumption in the synthesis of N-vinylcarboxylic acid amides were solved, achieving efficient and low-cost product purification and catalyst reuse.
CN120842104BActive Publication Date: 2026-05-12INNER MONGOLIA ACADEMY OF SCIENCE & TECHNOLOGY
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Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INNER MONGOLIA ACADEMY OF SCIENCE & TECHNOLOGY
- Filing Date
- 2025-07-11
- Publication Date
- 2026-05-12
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Abstract
The application relates to a synthesis method of N-vinyl carboxylic acid amide. The method comprises the steps of preparing a catalytic loading system, a condensation reaction, membrane separation, a dealcoholization reaction and crystal precipitation purification. A Fe3O4@SiO2@ZSM-5-SO3H solid acid catalyst and a composite stabilizer mixed system are combined with a tubular ZSM-5 molecular sieve membrane separation technology to avoid the problems of many by-reactions, complicated purification and the like in traditional processes. The method has the advantages of high reaction efficiency, few by-products, low energy consumption, recyclable catalyst, high product purity and suitability for polymerization reactions and the like, and solves the defects of the existing method.
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