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Citation: LUO Yi-Wen, ZHANG Li, NIU Dong-Fang, LU Jia-Xing. Electrosynthesis of Dimethyl Carbonate under Mild Conditions[J]. Chinese Journal of Applied Chemistry, ;2007, 24(9): 1071-1073. shu

Electrosynthesis of Dimethyl Carbonate under Mild Conditions

1.
Shanghai Key Laboratory of Green Chemistry and Chemical Process, East China Normal University, Shanghai 200062

Corresponding author: LU Jia-Xing,
Received Date: 8 October 2006
Available Online: 15 January 2007
Fund Project: 国家自然科学基金(20573037) (20573037)上海市自然科学基金(05JC14070)资助项目 (05JC14070)

Cyclic voltammetry of CO₂ in MeCN solution containing 0.1 mol/L TEABF₄ and DMF solution containing 0.1 mol/L TEABF₄ were studied at Cu electrode and it was shown that CO₂ will be reduced irreversibly at E=-2.3 V(vs.Ag/AgI). Dimethyl carbonate(DMC) was electrosynthesized from CO₂ and CH₃OH in the relevant solvent-supporting electrolyte systems in a one-compartment cell with Mg as consuming anode and Cu as cathode, followed by addition of MeI as an alkylating agent. The procedure was safe, clean and carried out under very mild conditions. The effect of solvent, supporting electrolyte, electrodes and temperature was investigated to optimize the electrolytic conditions. The highest yield of 14.92% was obtained when the reaction was carried out at E=-2.3 V(vs.Ag/AgI) in MeCN solution containing 0.1 mol/L TEABF₄ at temperature of 25℃ with 1 F/mol passed charge. It is a new electrochemical procedure for the synthesis of DMC from CO₂ and CH₃OH under mild conditions(P_CO₂=1.0 atm, T=25℃).
- CO₂,
- electrosynthesis,
- dimethyl carbonate
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