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Vol. 26 No. 9 (2014): Vol 26 Issue 9

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Carbon Anode for the Formation of Carbon Monoxide and its Impact on the Molten-salt Electrolysis

https://doi.org/10.14233/ajchem.2014.15730
Ze-quan Li
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China
Jing Guo
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China
Rong Hu
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China
Li-yue Ru
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China
Hai-hua Wang
College of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400044, P.R. China

Corresponding Author(s) : Ze-quan Li

lzq0313@cqu.edu.cn

Asian Journal of Chemistry, Vol. 26 No. 9 (2014): Vol 26 Issue 9

Abstract

Based on the theoretical calculation and experimental investigation, the formation of carbon monoxide in off-gas and its impact on molten-salt electrolysis of TiO2 were first studied. Flue gas analyzer was used to detect CO content in off-gas of the molten-salt electrolysis. X-ray diffraction was used to determine the phase composition of the products of electrolysis. It indicated that the CO is formed by the two ways. A part of CO is formed by the reaction between carbon and oxygen gas, which is the main anodic reaction. The other part of CO is generated by the side reactions. The results showed that the CO and CO2 cannot vent timely so as to cause the side reactions, such that influence the efficiency of electrolysis and the purity of cathode products.

Keywords

Molten-salt electrolysis Off-gas CO Formation Influence
Li, Z.- quan, Guo, J., Hu, R., Ru, L.- yue, & Wang, H.- hua. (2014). Carbon Anode for the Formation of Carbon Monoxide and its Impact on the Molten-salt Electrolysis. Asian Journal of Chemistry, 26(9), 2565–2570. https://doi.org/10.14233/ajchem.2014.15730
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