OXIDATION-REDUCTION EQUILIBRIUM OF CU2+ CU+ IN BINARY ALKALINE SULFATE MELTS/

Authors
YAMAMOTO T YAMANOUCHI N MASAMURA K TAMURA M IWASE M
Citation
T. Yamamoto et al., OXIDATION-REDUCTION EQUILIBRIUM OF CU2+ CU+ IN BINARY ALKALINE SULFATE MELTS/, Metallurgical and materials transactions. B, Process metallurgy and materials processing science, 27(3), 1996, pp. 385-392
Citations number
13
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Metallurgical and materials transactions. B, Process metallurgy and materials processing science → ACNP
ISSN journal
10735615
Volume
27
Issue
3
Year of publication
1996
Pages
385 - 392
Database
ISI
SICI code
1073-5615(1996)27:3<385:OEOCCI>2.0.ZU;2-K
Abstract
Oxidation-reduction equilibria for a Cu2+/Cu+ couple in binary alkalin e sulfate melts, Li2SO4 + R(2)SO(4) (R = Na, K, Rb, Cs), were determin ed at temperatures of 973, 1023, and 1073 K by equilibrating these mel ts with gas mixtures of Ar + O-2 + SO2. RedOx equilibria are well inte rpreted by the average ionic radii of alkaline metals: r(average) = X( Li2SO4) r(Li) + X(R(2)SO(4)) r(R), where r and X denote, respectively, mole fraction and the ionic radii of alkaline metal. The oxygen anion activities would increase with an increase in R(2)SO(4) mole fraction s of binary sulfates Li2SO4 + R(2)SO(4).