一种同源单原子催化剂及其基于置换捕获策略的制备方法和应用
By employing a substitution and capture strategy with homologous single-atom catalysts, inert metal oxides are transformed into highly active single-atom catalysts, solving the aggregation problem of inert metal oxides in catalyst preparation and achieving high-efficiency, low-cost catalytic performance enhancement, applicable to a variety of chemical reactions and industrial processes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH OF CHINA
- Filing Date
- 2024-05-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies struggle to efficiently and cost-effectively convert inert metal oxides into highly active single-atom catalysts. Furthermore, metal atoms tend to agglomerate during mass production, hindering the industrialization of single-atom catalysts.
A substitution and capture strategy using homologous single-atom catalysts is employed. By mixing and calcining iron oxide, ammonium salt, and iron salt under a protective atmosphere, a highly active single-atom catalyst is formed. The ammonium salt provides an acidic environment to etch the surface of the inert metal oxide and provides a nitrogen source to coordinate with the external metal source, thereby achieving the substitution of inert sites and the capture of active sites.
It achieves a two-order-of-magnitude improvement in the catalytic performance of inert iron oxides, reduces preparation costs, and is easy to mass-produce. It is suitable for hydrogen energy production, organic pollutant treatment, and fine chemical synthesis, especially for significantly degrading organic pollutants in Fenton-like reactions.
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Figure CN118437330B_ABST