scholarly journals Electrochemical reduction mechanism of several oxides of refractory metals in FClNaKmelts

2020 ◽  
Vol 39 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Hui Li ◽  
Lei Jia ◽  
Jing Wang ◽  
Jing-long Liang ◽  
Hong-yan Yan ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Electrochemical Reduction ◽  
Chemical Reaction ◽  
Transfer Process ◽  
Reduction Process ◽  
Refractory Metals ◽  
Reduction Mechanism ◽  
Reversible Process ◽  
Electron Transfer Process ◽  
One Step

AbstractThe dissolution characteristics and electrochemical reduction mechanism of oxides of refractory metals ZrO2, HfO2 and MoO3 in NaCl-KCl-NaF melts are studied. The results shows that there are no chemical reaction of ZrO2 and HfO2 in NaCl-KCl-NaF melts, the dissolution of MoO3 is chemically dissolved, and MoO3 reactwith melts to form Na2Mo2O7. The reduction process of zirconium in the NaCl-KCl-NaF-ZrO2 melts is a reversible process of one-step electron transfer controlled by diffusion. The electrochemical reduction process of ruthenium is a one-step reversible process and the product is insoluble; Electrochemical reduction of metallic molybdenum in melts is controlled by the diffusion and electron transfer process of active ion Mo2O27− . The electrochemical reduction process of the metal molybdenum in the melts is carried out in two steps.

scholarly journals The Electrochemical Reduction Mechanism of ZnFe2O4 in NaCl-CaCl2 Melts

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 925
Author(s):  
Chang Liu ◽  
Jinglong Liang ◽  
Hui Li ◽  
Hongyan Yan ◽  
Sijia Zheng ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Thermodynamic Analysis ◽  
Irreversible Process ◽  
Gradual Increase ◽  
Reduction Process ◽  
Reduction Mechanism ◽  
Reversible Process ◽  
Electrochemical Tests ◽  
Oxygen Ions ◽  
One Step

The electrochemical reduction process of ZnFe2O4 in NaCl-CaCl2 melts was studied. Thermodynamic analysis shows that the reduction process of ZnFe2O4 is carried out in multiple steps, and it is difficult to reduce Fe3+ to Fe in one step. Electrochemical tests revealed that the reduction process of ZnFe2O4 includes three steps: First, Fe3+ is reduced to Fe in two steps, then Zn2+ is reduced to Zn in one step. The reduction of Fe3+ on the Mo electrode is a reversible process controlled by diffusion, while the reduction of Zn2+ is an irreversible process controlled by diffusion. The influence of electrolysis voltage and temperature on the process of electric deoxidation has also been studied. It is indicated that properly increasing the temperature is conducive to the diffusion of oxygen ions, thereby increasing the deoxidation rate. With the gradual increase of voltage, the reduction process of ZnFe2O4 is ZnFe2O4 → FeO + ZnO → Fe + ZnO → Fe + Zn.

A High Energy Rechargeable Battery Based on a One-Step Successive Two-Electron Transfer Process

2005 ◽  
Vol 8 (8) ◽  
pp. A382 ◽  
Author(s):  
Kentarou Nishi ◽  
Toyohiko Nishiumi ◽  
Masayoshi Higuchi ◽  
Kimihisa Yamamoto
Keyword(s):  
Electron Transfer ◽  
Transfer Process ◽  
High Energy ◽  
Rechargeable Battery ◽  
Electron Transfer Process ◽  
One Step

scholarly journals Multiparameter Estimation in Voltammetry When an Electron Transfer Process Is Coupled to a Chemical Reaction

2016 ◽  
Vol 88 (9) ◽  
pp. 4724-4732 ◽  
Author(s):  
Alexandr N. Simonov ◽  
Graham P. Morris ◽  
Elena Mashkina ◽  
Blair Bethwaite ◽  
Kathryn Gillow ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Chemical Reaction ◽  
Transfer Process ◽  
Electron Transfer Process

First Redox Polymer Bearing One-Step Successive Two-Electron-Transfer Process Based on Redox Potential Inversion

2004 ◽  
Vol 37 (7) ◽  
pp. 2661-2664 ◽  
Author(s):  
Toyohiko Nishiumi ◽  
Yuya Chimoto ◽  
Yuki Hagiwara ◽  
Masayoshi Higuchi ◽  
Kimihisa Yamamoto
Keyword(s):  
Electron Transfer ◽  
Redox Potential ◽  
Transfer Process ◽  
Redox Polymer ◽  
Electron Transfer Process ◽  
One Step ◽  
Polymer Bearing
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