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Gas Evolution on Graphite and Oxygen Evolving Anodes During Aluminium Electrolysis

Cassayre, Laurent and Plascencia, Gabriel and Marin, T. and Fan, S. and Utigard, Torstein A. Gas Evolution on Graphite and Oxygen Evolving Anodes During Aluminium Electrolysis. (2006) In: Annual meeting of The Minerals, Metals & Materials Society, 12 March 2006 - 16 March 2006 (San Antonio, United States).

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Anode gas evolution, growth and flow behaviour during aluminium electrolysis have been investigated using various experimental techniques, including water modelling, X-ray visualization and direct observation. Video recordings of oxygenevolving anodes (SnO2, Cu, Cu-Ni) and carbon anodes were performed in laboratory electrolysis cells of various scales. The water model also investigated the effects of slotted anodes on the gas escape from beneath large anodes. Beneath large horizontal anodes, individual bubbles form and are then subsequently swept away by large sweeping bubbles flowing rapidly beneath the bottom surface. The gas behaviour on oxygen evolving anodes was very different from that with carbon, with the formation of very small bubbles that released very quickly from the anode due to improved wetting of the anode by the electrolyte.

Item Type:Conference or Workshop Item (Paper)
HAL Id:hal-04105798
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:Other partners > Universidad de Chile - UCHILE (CHILE)
Other partners > Instituto Politécnico Nacional - IPN (MEXICO)
Other partners > European Institute for Energy Research - EIFER (GERMANY)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > University of Toronto (CANADA)
Other partners > Institute for Transuranium Elements - ITU (GERMANY)
Laboratory name:
Deposited On:21 Nov 2008 14:11

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