一种偕胺肟功能化二维共价有机框架及其制备方法和应用
By preparing a two-dimensional covalent organic framework functionalized with amylopyridine, the stability and selectivity issues of uranyl ion separation in existing technologies were solved, achieving efficient adsorption of uranyl ions and deep separation of rare earth elements, thus improving the chemical stability and selectivity of the material.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGXI INST OF RARE EARTHS CHINESE ACAD OF SCI
- Filing Date
- 2024-07-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing covalent organic frameworks suffer from drawbacks such as poor stability, weak selectivity, and high cost in the separation of uranyl ions, especially in the separation of rare earth elements, where these problems have not been effectively addressed.
A cyano-modified two-dimensional covalent organic framework was generated by reacting 2,4,6-tris(4-aldehydephenyl)-1,3,5-triazine and 1,4-benzenediacetonitrile. The framework was then functionalized with a methylamine oxime to introduce a methylamine oxime group, forming a structurally stable nitrogen-rich framework that provides highly selective adsorption of uranyl ions.
It achieves highly selective capture and high-capacity adsorption of uranyl ions, exhibits excellent chemical stability, and is suitable for the removal of uranyl ions in complex environments, thereby improving the efficiency and safety of rare earth separation.
Smart Images
Figure CN118772358B_ABST