A catalyst for olefin epoxidation, its preparation method and application
By combining microwave-activated silver catalyst with an alumina support, the problem of uneven heating during the ethylene epoxidation process was solved, resulting in more efficient catalyst preparation and better overall performance, while reducing energy consumption.
CN116943652BActive Publication Date: 2025-12-02CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information
- Application Number
- CN202210410271.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-04-19
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2042-04-19
AI Technical Summary
Technical Problem
Existing catalysts for the epoxidation of ethylene to ethylene oxide suffer from problems such as uneven heating leading to limited overall catalyst performance and high energy consumption.
Method used
A catalyst for olefin epoxidation was prepared by activating a silver-containing mixture and an alumina support using microwave irradiation, which avoids local overheating and improves the dispersion of active centers.
Benefits of technology
This improved the overall performance of the catalyst, reduced reaction byproducts, extended the catalyst's lifespan, and reduced production energy consumption.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention belongs to the field of catalyst technology and discloses a catalyst for olefin epoxidation, its preparation method, and its application. The preparation method includes: (1) preparing a mixture containing a silver compound precursor, an organic amine, water, and optional auxiliary agents to obtain a silver-containing mixture; (2) fully contacting the silver-containing mixture with an alumina support, and leaching off excess mixture from the surface of the support to obtain a support carrying the silver-containing mixture; (3) irradiating the support carrying the silver-containing mixture with microwaves to obtain the catalyst. The olefin epoxidation catalyst prepared by the method of this invention avoids local overheating during the preparation process, improves the dispersion of active centers, and thus has excellent catalytic performance.
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