金属负载修饰阳离子交换树脂对水解离反应的影响

n this paper, a new thinking of using pure water as the electrolyte in electrochemical machining is put forward to diminish some environmental problems in the traditional process. After modified with metal species, the sulfonated cation-exchange resins are filled in the gap between anode and cathode. The effect of cation-exchange resins on water dissociation is studied by measuring current-voltage curves of the cell. The theoretical and experimental results show that in the presence of cation-exchange resins it is possible to use pure water as electrolyte in the electrochemical machining process. To dissociate the water molecules, the catalysis capability of the charged groups is better than that of metal species. The immobilized metal species partially block the ion-exchange sites on the surface of the resins and reaction channels between the water molecules and charged groups, i.e. catalysis capability of the charged groups is “masked” with the metal species deposition on the surfac