Prospects of Using Pseudobrookite as an Iron-Bearing Mineral for the Alkaline Electrolytic Production of Iron
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
3.1. Structural and Microstructural Features of the Ceramic Cathodes
3.2. Electrochemical Reduction of the Fe-Ti-Bearing Ceramic Cathodes
3.2.1. Studies of the Relevant Redox Processes by Cyclic Voltammetry
3.2.2. Chronoamperometric Studies of the Dense Fe2TiO5 Ceramic Cathodes
3.2.3. Chronoamperometric Studies of the Porous Cathodes
3.2.4. Galvanostatic Electroreduction
3.3. Electrochemical Reduction of Alkaline Fe2TiO5 Suspensions
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Composition | Before Reduction | After Reduction | ||
---|---|---|---|---|
Cathodic Peaks/Shoulders (V) | Anodic Peaks/Shoulders (V) | Cathodic Peaks/Shoulders (V) | Anodic Peaks/Shoulders (V) | |
Dense Fe2TiO5 | C′1 = −1.04 C′2 = −1.14 | A′1 = −0.87 A′2 = −0.69 | C′1 = −0.92 C’2 = −1.15 | - A′2 = −0.35 |
Porous Fe2TiO5 | C1 = −0.99 C2 = −1.15 | A1 = −0.88 A2 = −0.68 | C1 = −0.91 C2 = −1.14 | A1 = −0.85 A2 = −0.59 |
Porous Fe2TiO5·Fe2O3 | C1 = −1.01 C2 = −1.15 | A1 = −0.88 A2 = −0.67 | C1 = −0.91 C2 = −1.13 | A1 = −0.84 A2 = −0.59 |
Porous Fe2O3 | - C1 = −0.98 C2 = −1.13 | - A1 = −0.87 A2 = −0.63 | - C1 = −0.88 C2 = −1.12 | A0 = −1.04 A1 = −0.89 A2 = −0.59 |
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Lopes, D.V.; Lisenkov, A.D.; Ruivo, L.C.M.; Yaremchenko, A.A.; Frade, J.R.; Kovalevsky, A.V. Prospects of Using Pseudobrookite as an Iron-Bearing Mineral for the Alkaline Electrolytic Production of Iron. Materials 2022, 15, 1440. https://doi.org/10.3390/ma15041440
Lopes DV, Lisenkov AD, Ruivo LCM, Yaremchenko AA, Frade JR, Kovalevsky AV. Prospects of Using Pseudobrookite as an Iron-Bearing Mineral for the Alkaline Electrolytic Production of Iron. Materials. 2022; 15(4):1440. https://doi.org/10.3390/ma15041440
Chicago/Turabian StyleLopes, Daniela V., Aleksey D. Lisenkov, Luís C. M. Ruivo, Aleksey A. Yaremchenko, Jorge R. Frade, and Andrei V. Kovalevsky. 2022. "Prospects of Using Pseudobrookite as an Iron-Bearing Mineral for the Alkaline Electrolytic Production of Iron" Materials 15, no. 4: 1440. https://doi.org/10.3390/ma15041440