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http://dx.doi.org/10.5370/JEET.2018.13.6.2385

Decomposition Properties of Trifluoroiodomethane under Discharges and Interruptions  

Cai, Fan-Yi (NARI Group Corp., State Grid Electric Power Research Institute)
Tan, Dong-Xian (Dept. of Electrical Engineering, Shanghai Jiao Tong University)
Zhou, Bai-Jie (NARI Group Corp., State Grid Electric Power Research Institute)
Xue, Jian (NARI Group Corp., State Grid Electric Power Research Institute)
Xiao, Deng-Ming (Dept. of Electrical Engineering, Shanghai Jiao Tong University)
Publication Information
Journal of Electrical Engineering and Technology / v.13, no.6, 2018 , pp. 2385-2391 More about this Journal
Abstract
This paper is devoted to detecting decomposition characteristics of Iodotrifluoromethane ($CF_3I$) under alternating current (AC) discharges or load current interruptions. The decomposition products are measured utilizing chromatography-mass spectroscopy. It is found that less than 1% $CF_3I$ gas decomposed after several interruptions at load current of 200 A or hundred times of AC discharges. However, under interruptions at a current of 400 A, more than 95% $CF_3I$ gas decomposed into carbon tetrafluoride ($CF_4$) and hexafluoroethane ($C_2F_6$). The equilibrium compositions based on Gibbs free energy minimization of $CF_3I$ was calculated to explain the decomposition mechanism.
Keywords
$CF_3I$; Decomposition products; Interruption;
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