Murdoch University Research Repository

Welcome to the Murdoch University Research Repository

The Murdoch University Research Repository is an open access digital collection of research
created by Murdoch University staff, researchers and postgraduate students.

Learn more

Hydrometallurgical thermodynamics—IV. Effect of dimethylsulfoxide on the activity of Cu2+ in chloride media and free energies of transfer of CuCl−2 and AgCl−2 from water to aqueous dimethylsulfoxide

Muir, D.M., Singh, P., Kenna, C.C. and Senanayake, G. (1989) Hydrometallurgical thermodynamics—IV. Effect of dimethylsulfoxide on the activity of Cu2+ in chloride media and free energies of transfer of CuCl−2 and AgCl−2 from water to aqueous dimethylsulfoxide. Electrochimica Acta, 34 (11). pp. 1573-1579.

Link to Published Version: http://dx.doi.org/10.1016/0013-4686(89)87043-4
*Subscription may be required

Abstract

Reduction potentials of the Cu(II)/Cu(I), Cu(I)/Cu(0) and Ag(I)/Ag(0) couples have been measured over the whole range of dimethylsulfoxide—water compositions in the presence of 0.1 M HCl and the changes in activity and free energies of transfer (ΔGtr) of Cu2+, Cu+, CuCl−2, Ag+ and AgCl−2 from water to DMSOH2O mixtures are reported. Over the entire range of DMSOH2O compositions, values of ΔGtr CuCl−2 and AgCl−2 remain relatively constant with respect to water whilst values of ΔGtr, Cu2+, Cu+ and Ag+ decrease significantly. The competitive solvation and complexation of Cu+, Cu+ and Ag+ with DMSO and Cl− is discussed, and a possible application of the Cu(II)DMSOH2OCl− system to processing precious metal residues is considered.

Item Type: Journal Article
Murdoch Affiliation: School of Mathematical and Physical Sciences
Publisher: Elsevier
Copyright: © 1989 Published by Elsevier Ltd.
URI: http://researchrepository.murdoch.edu.au/id/eprint/20246
Item Control Page Item Control Page