Preparation method and application of guanidyl ionic liquid modified metal organic framework material

By synthesizing metal-organic framework materials modified with guanidine-based ionic liquids, the problems of catalyst separation and equipment corrosion in the reaction of carbon dioxide and epoxides were solved, achieving the effect of highly efficient catalysis of carbon dioxide and propylene oxide to synthesize propylene carbonate.

CN121927680APending Publication Date: 2026-04-28FUZHOU UNIV
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Patent Information

Application Number
CN202610033271.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-04-28

AI Technical Summary

Technical Problem

Existing technologies are difficult to effectively catalyze the cycloaddition reaction of carbon dioxide and epoxides, and ionic liquid catalysts are difficult to separate from the reaction system, leading to equipment corrosion and resource waste.

Method used

A metal-organic framework (MOF) material modified with guanidine-containing ionic liquid was synthesized. The ionic liquid was loaded into the MOF material through a preparation process to form an ILs-MOF composite material, which was applied to the reaction of carbon dioxide and propylene oxide to synthesize propylene carbonate.

Benefits of technology

It achieves high specific surface area, nanoscale pores and good thermal stability, solves the problem of difficult recovery of ionic liquids, and exhibits high catalytic efficiency in catalytic reactions. It is also insoluble in the product and easy to separate.

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Abstract

The invention relates to a preparation method and application of a guanidyl ionic liquid modified metal organic framework material, and belongs to the technical field of metal organic frameworks. The method specifically comprises the following steps: reacting chromic nitrate nonahydrate, 2-aminoterephthalic acid and a sodium hydroxide aqueous solution according to a certain molar ratio to obtain a metal organic framework, and connecting guanidyl-containing ionic liquid to the metal organic framework through chemical bonds to construct the ILs-MOFs crystal material with a large specific surface area. The material has the advantages of high specific surface area, multiple active sites, high stability, low synthesis cost and the like, and the heterogeneous catalyst is easy to recover. The guanidyl ionic liquid modified metal organic framework material prepared by the invention can efficiently adsorb and activate CO2, and can be used as a catalyst in the process of converting CO2 into high-added-value chemicals.
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