摘要
研究了铱含量、热分解温度等因素对电解制备次氯酸盐用铂铱钛阳极的涂层结构和电极性能的影响。结果表明,当电极涂层为Pt·IrO_2混合结构时,其催化性和抗腐蚀性明显地优于不含铱的纯铂涂层。室温下,用10A/dm^2的电流电解5％NaCl溶液,测得Pt·IrO_2阳极电解初始的析氯电位为1.03V,运行800h后为1.24V,且极化曲线继续持平,而在同一条件下,铂涂层电极只运行560h,电位已由开始的1.35V升至1.80V。
The influences of iridium content and thermal decomposition temperature on the coating structure and electrode properties of platinum, iridium and titanium anodes for clectrolytic preparation of hypochloritc has been investigated. The results show that the catalytic and corrosion resistant properties of the coating with Pt·IrO_2 mixing structure are superior to that of the pure platinum coating. During the electrolysis of Pt·IrO_2 anode in 5% NaCl solution at room temperature with 10A/dm^2 current density for 800 h, the evolution chlorine potential is increased to 1.24 V from 1.03V. For pure platinum coating electrode the potential is increased to 1.80 V from 1.35 V under the same conditions.
出处
《贵金属》
CAS
CSCD
北大核心
1991年第4期30-36,共7页
Precious Metals
关键词
铂
铱
阳极
金属复层
Platinum
Iridium
Metal coating
Anodes
