ELECTROCHEMICAL STABILITY OF TUNGSTEN CARBIDE CATALYST

Chinese Journal of Applied Chemistry ›› 1990, Vol. 0 ›› Issue (2): 74-76.

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ELECTROCHEMICAL STABILITY OF TUNGSTEN CARBIDE CATALYST

Ma Chunan¹, Zhou Yunhong², Zha Quanxing²

1. Department of Chemical Engineering, Zhejiang Institute of Technology, Hongzhou 310014;
2. Department of Chemistry, Wuhan University, Wuhan

Received:1989-06-07 Revised:1989-08-17 Published:1990-04-10 Online:1990-04-10

Abstract

Abstract: This paper deals with the electrochemical stability of the embedded powder clectrode oftungsten carbide(WC)catalyst. The results show that in acidic electrolytes WC exhibits agood electrochemical stability to hydrogen ionization reaction(HIR)and no oxide wasformed on the electrode surface if the potential was less than 800 mv(vs. D H E). In basicelectrolyte in parallel with hydrogen ionization reaction WC. itself undergoes electrochemicaloxidation. Thus WC catalyst cannot be used in basic electrolyte medium.

Key words: tungsten carbide, electrocatalysis, powder electrode, electrochemical stability

Ma Chunan, Zhou Yunhong, Zha Quanxing. ELECTROCHEMICAL STABILITY OF TUNGSTEN CARBIDE CATALYST[J]. Chinese Journal of Applied Chemistry, 1990, 0(2): 74-76.

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