Electrochemical Synthesis of Dimethyl Carbonate with Carbon Dioxide in 1-Butyl-3-Methylimidazoliumtetrafluoborate on Indium Electrode

摘要

Electrochemical reduction of carbon dioxide on indium (In) electrode to synthesis dimethyl carbonatewas studied in ionic liquid, 1-butyl-3-methylimidazoliumtetrafluoborate (BMIMBF4). Theelectrochemical behavior of electrocatalytic reduction CO2 on In electrode in ionic liquid BMIMBF4,had been studied by cyclic voltammogram with a reduction peak at -1.8 V (vs. Ag). The electrolysisexperiments were carried out by constant-potential electrolysis in an undivided cell under mildconditions without any toxic solvents, catalysts and supporting electrolytes, affording the dimethylcarbonate in a moderate yield (76%) at a potential of -1.7 V (vs Ag). The results showed that the yieldswere affected by temperature, working potential and charge passed.