VOLTAMMETRIC STUDY OF ANODIC ADSORPTION PHENOMENA ON GRAPHITE IN CRYOLITE-ALUMINA MELTS

被引：18

作者：

JAREK, S ^{[1
]}

THONSTAD, J ^{[1
]}

机构：

[1] UNIV TRONDHEIM,NORWEGIAN INST TECHNOL,IND ELECTROCHEM LABS,N-7034 TRONDHEIM,NORWAY

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1987年 / 134卷 / 04期

关键词：

ALUMINA - Oxidation - CARBON DIOXIDE - ELECTROCHEMISTRY - SODIUM COMPOUNDS - Oxidation;

D O I：

10.1149/1.2100586

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Very fast ( greater than 5 V/s) cyclic voltammetry measurements conducted on graphite in molten cryolite with alumina concentrations varying from 0. 25 weight percent (w/o) to 5 w/o showed the presence of an anodic peak prior to the peak associated with CO//2 formation. A corresponding reduction peak was observed in the cathodic branch, but the process was not reversible. These peaks were attributed to adsorption/desorption of oxygen forming a carbon-oxygen surface compound. The surface coverage was of the order of a monolayer.

引用

页码：856 / 859

页数：4

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