Microporous metal-organic framework material and method of preparation and rare gas separation

CN119552379BActive Publication Date: 2026-07-03NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV
Filing Date
2024-11-28
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing rare gas separation technologies suffer from problems such as low adsorption capacity or selectivity, expensive materials, complex preparation, and poor stability, making it difficult to achieve efficient and low-cost rare gas separation.

Method used

Microporous metal-organic framework materials are used, which are constructed from divalent metal ions, heterocyclic dicarboxylic acid ligands and nitrogen-containing heterocyclic ligands to form a three-dimensional framework structure. By controlling the pore size and chemical environment, the selective adsorption and separation of rare gases can be achieved.

Benefits of technology

It achieves the separation of high-purity rare gases, with a purity of up to 99.99%, and the materials are readily available, the preparation is simple, the stability is high, the operating energy consumption is low, and the equipment investment is small.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The application discloses a kind of microporous metal organic framework materials and preparation and rare gas separation method, belong to chemical adsorption separation technical field, microporous metal organic framework material is made of divalent metal ion, heterocyclic dicarboxylic acid ligand and nitrogen-containing heterocyclic ligand coordination construction;Divalent metal ion and heterocyclic dicarboxylic acid ligand coordination forms two-dimensional polymer, nitrogen-containing heterocyclic ligand as pillar, by with two-dimensional polymer coordination forms three-dimensional framework structure.Microporous metal organic framework material is used as adsorbent, and is contacted with rare gas mixed gas phase, realizes to high polarity rare gas identification capture, reaches the separation and purification of rare gas.The present application realizes the accurate control of pore chemistry electrostatic environment by changing different ligand and its functional group substituent, so as to realize the selective separation of xenon / krypton and helium / neon and other rare gas.
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