一种乙醛酸的制备方法
By using a niobic acid-supported hydrogen-form MWW molecular sieve catalyst to hydrolyze methyl glyoxylate in a tubular apparatus, combined with a separation device, the environmental pollution problem in the existing technology is solved, and the efficient preparation and continuous production of glyoxylic acid are realized.
CN115677478BActive Publication Date: 2026-07-17SHANGHAI XIECHEN NEW MATERIAL TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI XIECHEN NEW MATERIAL TECH CO LTD
- Filing Date
- 2022-11-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The use of chemicals such as ammonia, hydrogen peroxide, or ozone in existing methods for preparing glyoxylic acid has led to serious environmental pollution problems.
Method used
The hydrolysis of methyl glyoxylate was carried out in a tubular apparatus using a solid acid catalyst, particularly a hydrogen-form MWW structured molecular sieve catalyst supported on niobic acid. The hydrolysis products were then separated by a separation device to obtain an aqueous solution of glyoxylic acid.
Benefits of technology
This method enables the efficient preparation of glyoxylic acid under mild reaction conditions, avoiding environmental pollution, and features a simple process route that allows for continuous production.
✦ Generated by Eureka AI based on patent content.
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Abstract
本申请提供了一种乙醛酸的制备方法，以固体酸为催化剂，采用管式器，将原料在催化剂床层连续的发生水解反应，水解产物直接通入分离装置，甲醇从所述分离装置顶端分离，所述分离装置底端收集得到乙醛酸水溶液。本申请的乙醛酸的制备方法，乙醛酸甲酯在酸性催化剂的作用下水解得到乙醛酸，然后经过分离装置分离，该工艺路线简单，能够连续化生产，不存在其他合成路线的环境污染问题。
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