Heterogeneous catalysts for the cycloaddition of co2 with epoxides and methods of making and using the same

By using metal-organic framework materials MOF-6, MOF-7, and MOF-8 catalysts with BPMC and H2IP or H2TP as ligands, the problems of poor catalyst stability and harsh operating conditions were solved, and the reaction of CO2 with epoxides to form cyclic carbonates was achieved under mild conditions, which reduced production costs and improved catalyst stability.

CN117920350BActive Publication Date: 2026-06-19JIAXING UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIAXING UNIV
Filing Date
2023-05-08
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing catalysts suffer from poor stability, demanding operating conditions, and high costs in the cycloaddition reaction of CO2 with epoxides, leading to decreased yields and increased production costs.

Method used

Metal-organic framework materials MOF-6, MOF-7, and MOF-8 were synthesized using (2E,5E)-2,5-bis(3-pyridylmethylene)cyclopentanone ligand BPMC as the first ligand and isophthalic acid H2IP or terephthalic acid H2TP as the second ligand. These materials served as heterogeneous catalysts, and the synergistic effect of Lewis acidic sites and pyridine ligands was utilized to enhance the reaction activity.

Benefits of technology

The catalyst achieves highly efficient catalytic reaction of CO2 with epoxides to form cyclic carbonates under mild conditions, avoiding high temperature and high pressure conditions, reducing production costs, and exhibiting good stability and recyclability.

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Abstract

This invention belongs to the field of catalytic materials and technology, specifically relating to heterogeneous catalysts for the cycloaddition reaction of CO2 with epoxides, their preparation methods, and applications. Using cyclopentanone and 3-pyridinecarboxaldehyde as raw materials, this invention successfully synthesized a bispyridyl ligand, namely (2E,5E)-2,5-bis(3-pyridylmethylene)cyclopentanone (BPMC), and used FT-IR... 1 The material was characterized by HNMR. Subsequently, using BPMC as the main ligand and H2IP and H2TP as second ligands, three two-dimensional MOFs were successfully synthesized via a solvothermal method. These MOFs were then used as catalysts to catalyze the CO2 cycloaddition reaction of propylene oxide, all of which converted propylene oxide to ethyl carbonate. Finally, by expanding the reaction substrate to include propylene oxide, the reaction substrate could be converted into the corresponding product. Its excellent catalytic performance demonstrates its potential as a catalytic material in two-dimensional MOFs.
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