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Evaluation of alkali bromide salts for potential pyrochemical applications

P.K. Tripathy ; Toni Gutknecht (Institutionen för kemi- och bioteknik, Kärnkemi) ; S.D. Herrmann ; G.L. Fredrickson ; T.E. Lister
International Nuclear Fuel Cycle Conference: Nuclear Energy at a Crossroads, GLOBAL 2013; Salt Lake City, UT; United States; 29 September 2013 through 3 October 2013 Vol. 2 (2013), p. 867-873.
[Konferensbidrag, refereegranskat]

Transient techniques were employed to study the electrochemical behavior, reduction mechanism and transport properties of REBr3 (RE - La, Nd and Gd) in pure LiBr, LiBr-KBr (eutectic) and LiBr-KBr-CsBr (eutectic) melts. Gd(III) showed a reversible single step soluble-insoluble exchange phenomenon in LiBr melt at 973K. Although La (III), Nd(III) and Gd(III) ions showed reversible behavior in eutectic LiBr-KBr melts, these ions showed a combination of temperature dependent reversible and pseudo-reversible behavior. While both La(III) and Gd(III) showed one step reduction, the reduction of Nd(III) was observed to be a two step process. La metal could be electrodeposited from the ternary electrolyte at a temperature of 673K. Various electrochemical measurements suggest that both binary and ternary bromide melts can potentially be used to electrodeposit high purity RE metals at comparatively lower operating temperatures.



Denna post skapades 2015-05-07.
CPL Pubid: 216702

 

Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Kärnkemi (2005-2014)

Ämnesområden

Kärnkemi
Energiteknik

Chalmers infrastruktur