| 摘要 |
PURPOSE:To prevent active dissolution of the face of titanium opposite to the flow hole of an electrolyte and to stably operate electrolysis for a long period of time by coating a platinum-contg. film on the liquid contact part except the part coated with anodic active substance on the anodic surface of an electrode plate. CONSTITUTION:In a bipolar electrolyzer, a film contg. 10-60mol.% platinum and 40-90mol.% at least one kind of oxide of Ti, Zr, Nb, Ta and Sn is coated on the liquid contact part except the part coated by anodic active substance on the anodic surfaces of plural electrode plates. Thereby a filter press type bipolar electrolyzer is obtained which is capable of preventing active dissolution of the face of titanium and of being stably operated for a long time. A halogen- contg. soln. is utilized as an electrolyte and this electrolyzer is utilized to obtain the aimed substance such as hypohalogenite and halogenate. |
