An ultra-microporous dihydrogen phosphate anion hybrid porous material, a preparation method and application thereof

By preparing ultraporous dihydrogen phosphate anion hybrid porous materials, the co-adsorption phenomenon in the separation of acetylene/carbon dioxide and acetylene/ethylene was solved, achieving high selectivity and stability, and making them suitable for industrial gas separation.

CN122103603APending Publication Date: 2026-05-29GUANGDONG CARBON LANGUAGE NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG CARBON LANGUAGE NEW MATERIAL CO LTD
Filing Date
2026-03-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing porous materials exhibit co-adsorption phenomena in the separation of acetylene/carbon dioxide and acetylene/ethylene, resulting in low separation efficiency and high energy consumption and cost of traditional methods.

Method used

A novel microporous dihydrogen phosphate anion hybrid porous material was developed. The three-dimensional framework structure of Cu(H2PO4)(bpy)·2H2O was matched with the pore size and negatively charged surface of acetylene molecules, and high selective adsorption was achieved by utilizing multiple weak interactions.

Benefits of technology

It achieves efficient capture of acetylene under low-cost conditions, with high selectivity and stability, and is suitable for fixed bed, fluidized bed or moving bed processes. The separation selectivity reaches 121 and 53, making it suitable for industrial applications.

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Abstract

This invention discloses an ultraporous dihydrogen phosphate anion hybrid porous material, its preparation method, and its applications. The dihydrogen phosphate anion hybrid porous material is composed of a tricoordinated monovalent metal cation Cu. + With the bidentate nitrogen-containing ligand 4,4'-bipyridine and the monovalent anion H2PO4 ‑ Coordination forms one-dimensional chains, which are then connected by triple weak interactions to form a three-dimensional framework with narrow pore sizes and negatively charged pore surfaces. This invention also provides the application of the above-mentioned ultraporous dihydrogen phosphate anion hybrid porous material in the separation of acetylene / carbon dioxide and acetylene / ethylene mixed gases. The method of this invention can achieve high-capacity, high-selectivity sieving separation of acetylene / carbon dioxide and acetylene / ethylene mixed gases, and the adsorbent exhibits good water and chemical stability.
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