一种制备硫酸乙烯酯的方法
By replacing precious metal catalysts with core-shell structured catalysts, the problems of high cost and unstable quality in the synthesis of vinyl sulfate have been solved, realizing efficient and low-cost production of vinyl sulfate with qualified products that can be recycled.
CN117658976BActive Publication Date: 2026-07-17HEBEI YADONG NEW ENERGY MATERIALS CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HEBEI YADONG NEW ENERGY MATERIALS CO LTD
- Filing Date
- 2023-12-07
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing processes for synthesizing ethylene sulfate using precious metal catalysts are costly and produce inconsistent product quality. There is a lack of low-cost and stable catalyst systems.
Method used
A core-shell structured silica-coated metal oxide catalyst is used to replace noble metal catalysts by controlling the electronic effects and stability of the catalyst, thereby achieving efficient oxidation of vinyl sulfite to vinyl sulfate.
Benefits of technology
Production costs were reduced, catalyst stability and reaction efficiency were improved, product quality met industrial standards, and the catalyst was made recyclable.
✦ Generated by Eureka AI based on patent content.
Abstract
本发明为一种制备硫酸乙烯酯的方法。该方法包括如下步骤：将纯度大于99.0％的亚硫酸乙烯酯和二氯乙烷装入反应釜中，加入催化剂，降温至0℃，常压下开始滴加有效氯为13％的次氯酸钠水溶液，发生催化氧化反应生成硫酸乙烯酯；所述的催化剂为核壳结构，其组成包括二氧化硅壳和金属氧化物核；其中金属氧化物核为金属M1氧化物和金属M2氧化物，金属M1为Mn，金属M2为Co、Ni、Fe和La中的一种或任意组合，金属氧化物核的摩尔量与二氧化硅壳的摩尔比例为：1：(0.1～0.3)，金属M1与M2的摩尔比例为(8～9)：(2～1)。本发明避免了原有工艺使用贵金属作为催化剂的缺陷，降低了硫酸乙烯酯的生产成本。
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