一种纳米铜基催化剂、制备及其在加氢反应中的应用
By enhancing the interaction between Cu and SiO2 support through ultrathin SiO2-coated nano-copper catalysts, the problem of low low-temperature activity of non-precious metal catalysts is solved, achieving efficient conversion of acetylene to ethylene. It has excellent selectivity and resistance to CO poisoning and is suitable for industrial ethylene production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING SINGLE ATOM SITE CATALYSIS TECH CO LTD
- Filing Date
- 2021-09-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing non-precious metal catalysts exhibit low activity in the semi-hydrogenation of acetylene at low temperatures, while precious metal Pd-based catalysts are costly and prone to generating green oil, making it difficult to efficiently catalyze the conversion of acetylene to ethylene under mild conditions.
The catalyst employs ultrathin SiO2-coated nanoparticles, and the interaction between Cu and SiO2 support is enhanced through high-temperature treatment to form a strong interface. This enhances the catalyst's ability to activate hydrogen and the adsorption and activation of reactive molecules, preventing excessive hydrogenation of ethylene and providing resistance to CO poisoning.
It achieves complete conversion and high selectivity of acetylene at low temperatures, maintains ethylene selectivity of over 97%, and can still work effectively under high hydrogen partial pressure and in the presence of CO, avoiding the CO poisoning problem of precious metal catalysts.
Smart Images
Figure CN115722223B_ABST