THE INFLUENCE OF OXIDATIVE PRETREATMENT OF GRAPHITE-ELECTRODES ON THE CATALYSIS OF THE CR-3+/CR-2+ AND FE-3+/FE-2+ REDOX REACTIONS

被引：44
作者：
HOLLAX, E
CHENG, DS
机构：
[1] Fraunhofer-Inst fuer Solare, Energiesysteme, Freiburg, West Ger, Fraunhofer-Inst fuer Solare Energiesysteme, Freiburg, West Ger
来源：
CARBON | 1985年 / 23卷 / 06期
关键词：
CATALYSIS - CHEMICAL REACTIONS - Redox - ENERGY STORAGE - SURFACES;
D O I：
10.1016/0008-6223(85)90225-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Cyclic voltammetry was applied to investigate redox couple reactions in HCl electrolytes on highly oriented pyrographite electrodes activated by oxidative pretreatment. The activation effect observed was unstable for the Cr**3** plus /Cr**2** plus reaction in comparison to the Fe**3** plus reduction. It is concluded that acidic surface oxides are participating in the redox reaction. These oxides are reduced, however, in the case of Cr**3** plus reduction near the potential of hydrogen evolution.
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收藏
页码：655 / 664
页数：10
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