Journal of Applied Electrochemistry

, Volume 12, Issue 4, pp 411–416 | Cite as

The reaction occurring between gaseous CF4 and oxides dissolved in different molten fluorides. Some practical aspects

  • C. E. Castellano
  • A. J. Calandra


When CF4 is bubbled through molten fluorides containing dissolved oxides within the range 900–1020° C, a chemical reaction takes place which decreases the oxide concentration and yields CO2 and F ions. The possibility of the reaction between the CF4 evolved at the anode and dissolved alumina, occurring during the anode effect in aluminium reduction cells, is discussed. This reaction provides a simple and convenient method for removing oxides and hydroxides from molten fluorides.


Oxide Alumina Physical Chemistry Hydroxide Fluoride 
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Copyright information

© Chapman and Hall Ltd. 1982

Authors and Affiliations

  • C. E. Castellano
    • 1
  • A. J. Calandra
    • 1
  1. 1.Research and Development, Department of Electrochemical ProcessesALUAR Aluminio Argentino SAICPuerto Madryn, ChubutArgentina

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