Perflourocarbon generation during electrolysis in molten fluoride

Guihua Wang, Xiangsheng Wang, Komin Shu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The anode process of carbon electrode in fluoride melt was studied by voltammetry and chronoamperometry. Anode gases were analyzed by gas chromatography on-line during controlled-potential electrolysis. Two peaks were observed on the cyclic voltammograms. According to the results of gas chromatography, the first peak was corresponded to the discharge of residual oxide ions, with the formation of CO and CO2. Discharge of fluoride ions occurred at 4.1 V vs. Li+/Li, and leading to the anode effect. With the occurrence of anode effect, small amount of CF4 was detected. As the potential reached 4.5 V, CF4 and C2F 6 gas evolution occurred, and the current increased to form the second peak.

Original languageEnglish
Title of host publicationEnergy Technology 2011
Subtitle of host publicationCarbon Dioxide and Other Greenhouse Gas Reduction Metallurgy and Waste Heat Recovery - Held During the TMS 2011 Annual Meeting and Exhibition
Pages131-135
Number of pages5
Publication statusPublished - 2011 Jul 27
Externally publishedYes
EventEnergy Technology 2011: Carbon Dioxide and Other Greenhouse Gas Reduction Metallurgy and Waste Heat Recovery - Held During the TMS 2011 Annual Meeting and Exhibition - San Diego, CA, United States
Duration: 2011 Feb 272011 Mar 3

Publication series

NameTMS Annual Meeting

Other

OtherEnergy Technology 2011: Carbon Dioxide and Other Greenhouse Gas Reduction Metallurgy and Waste Heat Recovery - Held During the TMS 2011 Annual Meeting and Exhibition
CountryUnited States
CitySan Diego, CA
Period11/2/2711/3/3

Keywords

  • Electrochemical methods
  • Fluoride
  • Gas chromatography
  • PFC emission

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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