Tilquin, JY.
Duveiller, P
Gilbert, J.
Claes, Paul
[UCL]
The electrochemical behaviour of sulfate in Na2O . 2.5SiO(2) at 1000 degrees C is studied by means of cyclic voltammetry, square wave voltammetry and impedance spectroscopy. It appears that the thermal decomposition of sodium sulfate in Na2O . 2.5SiO(2) at 1000 degrees C is a complete and fast process providing a melt containing S(IV). The voltammograms show two reduction peaks attributed to the reduction of sulfite ions to elementary sulfur. The first peak corresponds to a reduction involving strong adsorption of sulfur on the electrode. The formation of a layer of adsorbed sulfur atoms during the prewave occurring anodic to the normal diffusion peak has a strong influence on the double layer capacitance measured by impedance spectroscopy. (C) 1996 Elsevier Science Ltd.
Bibliographic reference |
Tilquin, JY. ; Duveiller, P ; Gilbert, J. ; Claes, Paul. Electrochemical behaviour of sulfate in sodium silicates at 1000 degrees C. In: Electrochimica Acta, Vol. 42, no. 15, p. 2339-2346 (1997) |
Permanent URL |
http://hdl.handle.net/2078.1/46205 |