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Determination of a stability potential-pO2- diagram of samarium in the eutectic LiCl-KCl

Published online by Cambridge University Press:  17 March 2011

G. Córdoba ,
C. Caravaca  and
J. Quiñones
G. Córdoba
Affiliation:
Nuclear Fission Department. CIEMAT. Avda. Complutense 22. 28040-Madrid., SPAIN.
C. Caravaca
Affiliation:
Nuclear Fission Department. CIEMAT. Avda. Complutense 22. 28040-Madrid., SPAIN.
J. Quiñones
Affiliation:
Nuclear Fission Department. CIEMAT. Avda. Complutense 22. 28040-Madrid., SPAIN.
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Abstract

Abstract:Reaction between samarium trichloride and oxide ions was studied in the fused LiCl – KCl eutectic mixture at 723 K, by potentiometry with an yttria-stabilised zirconia membrane electrode. Titration curve demonstrated the existence of a precipitated samarium oxychloride (SmOCl), under this experimental conditions, with a solubility product value of 7.59 ţ 0.3 (molality scale). The combination of this value with the standard potentials allowed setting up the potential–pO2- stability diagram which summarises the properties of Sm species in the eutectic LiCl – KCl melt.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC8.50
Copyright
Copyright © Materials Research Society 2004

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