氧阴极用于电解电渗析法制备硅溶胶研究

Porous Gas Diffusion Oxygen Cathode for Electrodialysis Process

通过对氧阴极电解电渗析槽和析氢电解电渗析槽的槽电压、电流效率、能耗等的比较，说明在电化学法制备硅溶胶过程中，用氧阴极代替析氢电极可将电解电渗析过程返回到电渗析过程。在电流密度０～１００ｍＡ·ｃｍ－２范围内，槽电压降低０．８６～１．３Ｖ左右，可节约电能１６％左右。

In the process of producing silica sols by electrodialysis, with porous gas diffusion oxygen cathode instead of steel cathode, the cell voltage can be reduced 0.86～1.13 V,the power consumption of alkali silica sols (pH=9.5) is about cut down 16%, while the current efficiency has no changing. With porous gas diffusion oxygen cathode instead of steel cathode, the electrolysis electrodialysis process can be returned to electrodialysis process.