Abstract
Recent progress in material science might soon allow the replacement of the consumable carbon anode by an inert material. This is likely to induce changes in the overall process, and particularly in the gas evolution. Video recordings of oxygen-evolving anodes (SnO2, Cu, Cu-Ni) and carbon anodes were performed in laboratory electrolysis cells, using direct observation from above, a see-through cell, and radiography techniques. The gas behavior was very different between the two kinds of anodes, and probably linked to the wettability of the material by the electrolyte.
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References
R.P. Pawlek, “Inert Anodes for the Primary Aluminium Industry: An Update,”Light Metals 1996, ed. W. Hale (Warrendale, PA: TMS, 1996), p. 243.
W.E. Haupin, “See-through Hall-Héroult Cell,”Aluminium, 4 (1975), p. 273.
J. Xue and H. Øye, “Bubble Behaviour—Cell Voltage Oscillation during Aluminium Electrolysis and the Effects of Sound and Ultrasound,”Light Metals 1995, ed. J. Evans (Warrendale, PA: TMS, 1995), p. 265.
Q. Zhuxian et al., “Formation of Metal Fog during Molten Salt Electrolysis Observed in See-through Cell,”J. Appl. Electrochem., 17 (1987), p. 707.
T.A. Utigard, J.M. Toguri, and S.W. Ip, “Direct Observation of the Anode Effect by Radiography,”Light Metals 1988, ed. L.G. Boxall (Warrendale, PA: TMS, 1988), p. 703.
T.A. Utigard, H. Costa, and P. Popelar, “Visualization of the Hall-Héroult Process,”Light Metals 1994, ed. U. Mannweiler (Warrendale, PA: TMS, 1994), p. 233.
A. Solheim et al., “Liquidus Temperature and Alumina Solubility in the System Na3AlF6-AlF3-LiF-CaF2-MgF2,” in Ref. 3, p. 456.
Q. Zhuxian, F. Liman, Shenyang, and K. Grotheim,Aluminium, 5 (1986), p. 341.
T.A. Utigard and J.M. Toguri, “Anode Gas Behaviour during Electrolysis,” in Ref. 3, p. 265.
R.J. Aaberg et al., “The Gas under Anodes in Aluminium Smelting Cells Part II: Gas Volume and Bubble Layer Characteristics,”Light Metals 1997, ed. R. Huglen (Warrendale, PA: TMS, 1997), p. 341.
K. Grjotheim et al.,Aluminium Electrolysis: Fundamentals of the Hall-Héroult Process, 2nd edition (Dusseldorf, Germany: Aluminium Verlag, 1982), p. 146.
H. Vogt, “Contribution to the Interpretation of the Anode Effect,”Electrochimica Acta, 42 (1997), p. 2695.
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Cassayre, L., Utigard, T.A. & Bouvet, S. Visualizing gas evolution on graphite and oxygen-evolving anodes. JOM 54, 41–45 (2002). https://doi.org/10.1007/BF02701696
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DOI: https://doi.org/10.1007/BF02701696