摘要
采用电沉积法制备了含有中间层的Bi、Co、Cu、Sn4种掺杂钛基PbO2电极,用稳态极化曲线法测定了4种电极在H2S04介质中Cr2(SO4)3电氧化的电化学参数。考察了硫酸介质中4种电极作为阳极电解氧化硫酸铬制备重铬酸的平均电流效率,并和未掺杂电极进行了对比,结果表明,掺杂Co电极电催化活性有明显提高。
Ti - based lead dioxide electrodes with middle layer of doped Bi, Co, Cu and Sn were prepared by electrodeposition method, and electro - chemical parameters of chromium sulfate in sulfuric acid medium with the four kinds of electrode were determined by steady - state polarization curve. Average current efficiency of four electrodes as anode in the medium of sulfuric acid for electrolytic oxidation of chromium sulfate to dichromic acid was investigated, and comparison was made between doped and non - doped electrodes. Result showed that electro - catalytic activity of electrode doped with Co had remarkable increase.
出处
《云南化工》
CAS
2008年第2期23-25,共3页
Yunnan Chemical Technology
关键词
二氧化铅电极
硫酸铬
电解
电沉积
电流效率
lead dioxide electrode
chromium sulfate
electrolysis
eletrodeposition
current efficiency
