摘要
探讨了在Pt/C气体扩散电极表面进行Hg修饰后在苯-水体系中的阴极还原反应,表明了这种Hg修饰电 极在电化学苯储氢反应中有良好的表现,电极的加氢反应产物为环己烯和环己烷。对比Hg修饰Pt/C电极前后的 加氢及析氢反应速率和电流效率,表明Hg修饰Pt/C电极的加氢效果较好并且有一定的抑制析氢反应作用,是适 于苯-水体系电化学苯加氢反应的优良电极材料。通过对极化曲线的对比分析,表明Hg修饰后电极的电化学析 氢电位窗口负移,也有利于抑制析氢副反应的发生。
The performance of Mercury modified Pt/C diffusion electrode on cathode reaction of benzene-water system was disussed. The electrolytic technique of Benzene and water performed well in hydrogen storage and transportation. The system can store hydrogen into Cyclohexene and Cyclohexane by electrolysis. The experiments proved that Hg modified electrode was better than Pt/C electrode in hydrogenation of benzene with higher reaction velocity and electricity efficiency. Moreover, the hydrogen evolution can be greatly inhibited. The experiments revealed that Hg modified Pt/C electrode may behave a better material in electrolytic reaction of benzene-water system into cyclohexane. Electrolytic Cyclic Voltammetry also testified that the electrochemical windows of water of the modified electrode became more negative, which is also propitious to constrain production of hydrogen.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2005年第4期563-567,共5页
Acta Energiae Solaris Sinica
基金
"973"国家重点基础研究项目(TG2000026409)
关键词
汞修饰
苯加氢
电化学
储氢
电解
mercury modified cathode
hydrogenation of benzene
electrochemistry
hydrogen storage
electrolysis
