An electrocatalytic reduction of CO in a heteropolyacid ionic liquid-indium dual catalyst system 2 Process for the preparation of ethanol acetic acid

An ionic liquid, CO2 technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of inability to achieve deep reduction of CO2, complicated preparation process of ionic liquids, etc., and achieve excellent electrochemical oxidation. Reduction activity, inhibition of hydrogen evolution side reaction, high conductivity effect
CN112144073BActive Publication Date: 2021-10-08HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2021-10-08

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Abstract

An Electrocatalytic Reduction of CO in a Heteropolyacid Ionic Liquid-Indium Dual Catalyst System 2 Process for the preparation of ethanol acetic acid. The invention belongs to electrocatalytic reduction of CO 2 Preparation of ethanol acetic acid fields. The purpose of the invention is in order to solve existing reduction CO 2 The response is generally 2e ‑ 、4e ‑ transfer reaction, unable to achieve CO 2 deep reduction, and the complex technical problems of the ionic liquid preparation process of the existing reaction system. The present invention prepares polyoxometalate ionic liquid (n-Bu 4 N) 3 SVW 11 o 40 , after dissolving it in acetonitrile as catholyte, using dilute sulfuric acid as anolyte to electrocatalytically reduce carbon dioxide to prepare ≥C 1 The liquid phase products are ethanol and acetic acid. The method of the present invention is simple, effectively solves the problem that the existing multi-acid ionic liquids are rare and in short supply, and the reaction conditions are mild, the economic cost is low, the energy efficiency can be increased to 4 to 5 times, and the obtained ethanol Faradaic efficiency is 7% to 7%. 16%, and the faradaic efficiency of acetic acid is 14% to 67%.
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Description

technical field

[0001] The invention belongs to electrocatalytic reduction of CO 2 The field of preparation of ethanol acetic acid, specifically relates to an electrocatalytic reduction of CO in a heteropolyacid ionic liquid-indium dual catalytic system 2 Process for the preparation of ethanol acetic acid. Background technique

[0002] CO 2 As the highest valence state of carbon element, its reduction into various high value-added chemicals has attracted worldwide attention. Currently realized CO 2 Reduction methods include photocatalysis, thermal catalysis, catalytic hydrogenation, and electrocatalysis. Among them, the electrocatalytic CO 2 Reduction is more popular because it is easy to control the reaction conditions, easy to operate and can realize artificially closed carbon cycle. The current electrocatalytic CO 2 Reduction has emerged as a sustainable and economical way to remove atmospheric CO 2 Efficient strategy for conversion to fuels and chemicals, but ele...

Claims

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