一种硅修饰的氧化铈负载钌基氨合成催化剂及其制备方法
By introducing a silanediol-ammonia mixture solution onto cerium oxide to form silanediol groups, the problems of poor stability and hydrogen poisoning of traditional catalysts under high temperature and high pressure are solved, and a highly efficient ammonia synthesis effect is achieved.
CN118002115BActive Publication Date: 2026-07-17FUZHOU UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- FUZHOU UNIV
- Filing Date
- 2024-03-20
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Traditional ammonia synthesis catalysts have poor stability under high temperature and high pressure conditions. Activated carbon supports are prone to methanation, and cerium oxide supports suffer from hydrogen poisoning, all of which affect the ammonia synthesis reaction.
Method used
A ruthenium-based catalyst supported on cerium oxide modified with silicon was developed. By introducing a silanol-ammonia mixture onto the cerium oxide, silanediol groups were formed, which suppressed hydrogen adsorption and overflow, and improved the stability of the catalyst.
Benefits of technology
It significantly improved the ammonia synthesis performance of the catalyst, reduced hydrogen poisoning, and enhanced the catalyst's activity and stability.
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Figure CN118002115B_ABST
Abstract
本发明公开了一种硅修饰氧化铈负载的钌基氨合成催化剂及其制备方法，所述催化剂是通过钌前驱体将钌引入到氧化铈中得到氧化铈负载的钌样品，然后通过浸渍法，利用硅醇氨水混合溶液引入硅，并在含氢混合气体中还原而制得的。与常规氧化铈负载钌催化剂以及已制备出的硅修饰氧化铈负载的钌催化剂相比，本发明所得催化剂具有较高的氨合成活性，有较好的应用前景。
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