Influence of alkaline earth metal cations on the charge transfer kinetics for the redox couple Ti(IV)/Ti(III) in a chloride–fluoride melt


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The influence of strongly polarizing cations Mg2+, Ca2+, Sr2+, and Ba2+ on the charge transfer kinetics of the redox couple Ti(IV)/Ti(III) is studied. The standard rate constants of charge transfer (ks) for the Ti(IV)/Ti(III) redox couple in the (NaCl–KCl)eq–NaF (10 wt %)–K2TiF6 melt upon the addition of the strongly polarizing cations into the starting melt are determined. The dependence of the charge transfer rate constants on the ionic potential of the cations is established. The activation energies of the charge transfer process are calculated for the fluoride complexes of the Ti(IV)/Ti(III) redox couple with the outer-sphere cations Mg2+, Ca2+, Sr2+, and Ba2+.

作者简介

D. Vetrova

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials

Email: kuznet@chemy.kolasc.net.ru
俄罗斯联邦, ul. Fersmana 26a, Apatity, Murmansk region, 184209

S. Kuznetsov

Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials

编辑信件的主要联系方式.
Email: kuznet@chemy.kolasc.net.ru
俄罗斯联邦, ul. Fersmana 26a, Apatity, Murmansk region, 184209

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