Method for preparing dimethyl sebacate through electrooxidation of monomethyl adipate and coupling hydrogen production

By using high catalytic activity anode and low hydrogen-resolving overpotential cathode in the electrolytic cell, the electrooxidation coupling of monomethyl adipic acid monomethyl sebacate is achieved to produce dimethyl sebacate and high purity hydrogen, which solves the problems of high energy consumption in the traditional synthesis process and the safety hazards of electrolyzed hydrogen production, and improves the economic and efficiency of the reaction.

CN119685837AActive Publication Date: 2025-03-25JILIN UNIVERSITY
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Patent Information

Application Number
CN202411803547.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-25
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

The synthesis of dimethyl sebacate by traditional castor oil pyrolysis method has problems such as low yield, use of toxic and harmful reagents and large energy consumption. Hydrogen production by electrolyzed water faces problems such as high energy consumption, low added oxygen production value and safety hazards.

Method used

A separator electrolytic cell was used, a highly catalytic active shaped stable electrode was used as anode and a low hydrogen-resolution overpotential electrode was used as the cathode. Dimethyl sebacate was generated by electrooxidation coupling of monomethyl adipic acid, and high-purity hydrogen was prepared at the cathode.

Benefits of technology

The selective electrocatalytic oxidation performance of monomethyl adipic acid adipic acid monomethyl sebacate is improved, efficient conversion of dimethyl sebacate is achieved, the cathode hydrogen evolution overpotential is reduced, the atomic economy of the overall reaction is improved, energy consumption is reduced and comprehensive economic benefits are improved.

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Abstract

The invention discloses a method for preparing dimethyl sebacate through electrooxidation of monomethyl adipate and coupling hydrogen production. In a diaphragm electrolytic cell, the electrochemical conversion from the monomethyl adipate to the dimethyl sebacate is realized at an anode, and meanwhile, the efficient production of high-purity hydrogen at a cathode is realized through the design of a high-performance cathode catalyst and an electrode. According to the method, an active cathode with low hydrogen evolution overpotential and a dimensionally stable anode with high catalytic activity are adopted, and a constant-current electrolysis strategy is utilized, so that the selective electrocatalytic oxidation performance of the monomethyl adipate is improved, and efficient electrocatalytic conversion from the monomethyl adipate to the dimethyl sebacate is realized. And meanwhile, the cathode hydrogen evolution overpotential and the cell voltage are greatly reduced. And compared with a traditional electrosynthesis process, the current efficiency is greatly improved, the energy consumption is reduced, and the method has a good industrialization prospect.
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