BIPOLE MATRIX ELECTRODE

An electrochemical reactor, particularly useful for the production of propylene oxide is provided. The reactor comprises two spaced apart monopole electrodes, and at least one electrically conducting matrix electrode disposed between the monopole electrodes. The matrix electrodes are dimensioned so that when a potential is applied across the monopole electrodes, and a mixture (i.e. an electrolyte or a mixture of electrolyte and a fluid immiscible therewith) of appropriate conductivity disposed therebetween, each matrix electrode acts as a bipole electrode. Preferably, fluid feed means is provided also for passing an immiscible fluid, in particular a gas, through the reactor simultaneously with the electrolyte. A method of operating the foregoing electrochemical reactor is also described.