scholarly journals Composition of outer sphere cations and the charge transfer kinetics of the Ti (IV)/Ti (III) redox couple in the KCl—KF melt.

2020 ◽  
Vol 11 (3-2020) ◽  
pp. 33-38
Author(s):  
D.A. Vetrova ◽  
◽  
S.A. Kuznetsov ◽  

The charge transfer kinetics for the redox couple Ti(IV)/Ti(III) in the KCl —KF (10 wt. %) —K2TiF6was studied by cyclic voltammetry method. The influence of strongly polarizing Mg2+, Ca2+, Sr2+and Ba2+cations on the kinetics of charge transfer for the Ti(IV)/Ti(III) redox couple upon their introduction into the initial melt, was studied. The activation energies of the charge transfer process for the initial melt and for the melt with the addition of alkaline earth metal cations were calculated.

2014 ◽  
Vol 12 (12) ◽  
pp. 1294-1303 ◽  
Author(s):  
Vladimir Beliy ◽  
Elena Udoratina

AbstractThe purpose of this work was to study the kinetics of wood pyrolysis in the presence of inorganic salts, representatives of classes of alkali and alkaline earth metal halides (NaCl, KCl, KBr, CaCl2, BaCl2·2H2O) and Lewis acids (AlCl3·6H2O, FeCl3·6H2O, CuCl2, CuBr2, ZnCl2·1.5H2O, NiCl2·6H2O, SnCl2·2H2O) using TG-DSC. The activity of these catalysts was estimated by the temperature of the beginning of pyrolysis, charcoal yield and kinetic parameters, such as energy of activation and reaction order. Using the Lewis acids as catalysts for pyrolysis leads to a decrease in the temperature of the process beginning and the activation energy. In the presence of other catalysts activation energy does not significantly change. The increase of a seeming reaction order in the presence of Lewis acids possibly is a consequence of complication of the thermodestruction mechanism, with the appearance of new parallel competing stages.


2021 ◽  
Vol 12 (2-2021) ◽  
pp. 60-65
Author(s):  
D. A. Vetrova ◽  
◽  
S. A. Kuznetsov ◽  

The influence of the second coordination sphere of titanium complexes on the charge transfer kinetics of the Ti (IV)/Ti (III) redox couple in melts of alkali metal halides was studied by cyclic voltammetry method. Diffusion coefficients in the CsC-CsF (10 wt. %) melt were calculated. The standard rate constants of charge transfer have been determined by the Nicholson method. The activation energies of the charge transfer process in (NaCl- KCl)equimol-NaF (10 wt. %) — K2TiF6, KCl-KF (10 wt. %) — K2TiF6 and CsCl-CsF (10 wt. %) — K2TiF6 melts were calculated.


2018 ◽  
Vol 20 (19) ◽  
pp. 13331-13339 ◽  
Author(s):  
Kaushik Hatua ◽  
Avijit Mondal ◽  
Prasanta K. Nandi

In the investigated inverse sandwich complexes, charge transfer from alkali metal (M1) led to aromatically stabilized Cp ring, which prevented further charge transfer from the alkaline earth metal (M2).


2014 ◽  
Vol 117 (1) ◽  
pp. 473-480 ◽  
Author(s):  
Sukhjinder Singh ◽  
Deepika Saini ◽  
S. K. Mehta ◽  
Ravneet Kaur ◽  
Valeria Ferretti

2015 ◽  
Vol 26 (2) ◽  
pp. 585-592 ◽  
Author(s):  
Valery V. Volchkov ◽  
Fedor E. Gostev ◽  
Ivan V. Shelaev ◽  
Viktor A. Nadtochenko ◽  
Svetlana N. Dmitrieva ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document