Abstract
AbstractThe Bunsen reaction assisted with membrane was carried out to skip the separation processes after the reaction. In order to improve the reaction efficiency, the radiation-grafted cation exchange membrane (CEM) with a high ion exchange capacity (IEC) and the highly-porous Au-electroplated electrode were developed. The divinylbenzen-crosslinked radiation-grafted CEMs showed the high proton conductivity and low water permeation flux. The porous electrodes with large electrochemically active surface area reduced the effective overvoltage for SO2 oxidation at the anode side. The membrane Bunsen reaction was carried out using the CEM and the porous Au electrode. The overpotential largely decreased to 0.21 V by using the CEM (IEC = 2.9 mmol/g) at 50 °C.KeywordsCation exchange membraneRadiation graftingCrosslinkingPorous metal electrodeOverpotential
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