Electrosynthesis of dimethyl carbonate from methanol was studied at room temperature in the presence of atmospheric pressure of CO₂. The only product obtained was dimethyl carbonate in a CH₃CN-TEABr (tetraethylammonium bromide) solution electrolyzed under galvanostatic control. Influences of the nature of working electrodes, current densities, the passed charges on electrolysis, supporting electrolytes and different procedures of adding methanol were investigated to optimize the electrolytic conditions, The maximal yield is 74% on Cu/C electrodes under a constant current of 17 mA•cm^－2 until 2 F•mol^－1 of charge has passed through the cell. With respect to the methods so far reported, the yield of dimethyl carbonate in this paper is highest.

Key words: methanol, dimethyl carbonate, electrosynthesis, atmospheric-pressure, room-temperature, CO₂