Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium
The mechanism governing the deoxidation of vanadium metal is regarded as fundamental knowledge; however, it has not been elucidated in existing literature. In this paper, the thermodynamic data of V-H-O systems were summarized, and the Gibbs free energies of the main compounds were calcu...
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Technical Faculty, Bor
2021
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oai:doaj.org-article:86791e7ff47843e8b8c1405b566049162021-11-22T11:04:01ZThermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium1450-53392217-717510.2298/JMMB210108037Zhttps://doaj.org/article/86791e7ff47843e8b8c1405b566049162021-01-01T00:00:00Zhttp://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100037Z.pdfhttps://doaj.org/toc/1450-5339https://doaj.org/toc/2217-7175The mechanism governing the deoxidation of vanadium metal is regarded as fundamental knowledge; however, it has not been elucidated in existing literature. In this paper, the thermodynamic data of V-H-O systems were summarized, and the Gibbs free energies of the main compounds were calculated. Consequently, the deoxidation limits of different reductants in a V-O system were evaluated, namely: Si, Al, and Mg. It was observed that Si cannot remove an O content of less than 7.27 wt% from V. However, Al was the stronger reducing agent; it could remove O contents of up to 0.01 and 0.1 wt% at 800 and 1050 °C, respectively. Nevertheless, Mg exhibited the best reducing properties as it could remove less than 0.01 wt% of O at 1100 °C. The addition of H2 renders the V-O solid solution unstable to a certain extent, thereby indicating that H2 facilitates deoxygenation. Furthermore, the results obtained by analyzing the equilibrium conditions were in accordance with the results of the deoxidation limit in the V-O system. In other words, this study demonstrates that the oxygen in vanadium can be effectively controlled by changing the reductant dosage and temperature.Zhong D.-P.Pei G.-S.Xiang J.-Y.Pan C.Gu W.Lv X.-W.Technical Faculty, Borarticlev-h-o solid solutiongenerating gibbs free energyde-oxidation limitequilibrium phaseMining engineering. MetallurgyTN1-997ENJournal of Mining and Metallurgy. Section B: Metallurgy, Vol 57, Iss 3, Pp 413-419 (2021) |
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DOAJ |
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EN |
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v-h-o solid solution generating gibbs free energy de-oxidation limit equilibrium phase Mining engineering. Metallurgy TN1-997 |
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v-h-o solid solution generating gibbs free energy de-oxidation limit equilibrium phase Mining engineering. Metallurgy TN1-997 Zhong D.-P. Pei G.-S. Xiang J.-Y. Pan C. Gu W. Lv X.-W. Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| description |
The mechanism governing the deoxidation of vanadium metal is regarded as
fundamental knowledge; however, it has not been elucidated in existing
literature. In this paper, the thermodynamic data of V-H-O systems were
summarized, and the Gibbs free energies of the main compounds were
calculated. Consequently, the deoxidation limits of different reductants in
a V-O system were evaluated, namely: Si, Al, and Mg. It was observed that Si
cannot remove an O content of less than 7.27 wt% from V. However, Al was the
stronger reducing agent; it could remove O contents of up to 0.01 and 0.1
wt% at 800 and 1050 °C, respectively. Nevertheless, Mg exhibited the best
reducing properties as it could remove less than 0.01 wt% of O at 1100 °C.
The addition of H2 renders the V-O solid solution unstable to a certain
extent, thereby indicating that H2 facilitates deoxygenation. Furthermore,
the results obtained by analyzing the equilibrium conditions were in
accordance with the results of the deoxidation limit in the V-O system. In
other words, this study demonstrates that the oxygen in vanadium can be
effectively controlled by changing the reductant dosage and temperature. |
| format |
article |
| author |
Zhong D.-P. Pei G.-S. Xiang J.-Y. Pan C. Gu W. Lv X.-W. |
| author_facet |
Zhong D.-P. Pei G.-S. Xiang J.-Y. Pan C. Gu W. Lv X.-W. |
| author_sort |
Zhong D.-P. |
| title |
Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| title_short |
Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| title_full |
Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| title_fullStr |
Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| title_full_unstemmed |
Thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| title_sort |
thermodynamic behavior of dissolved oxygen and hydrogen in pure vanadium |
| publisher |
Technical Faculty, Bor |
| publishDate |
2021 |
| url |
https://doaj.org/article/86791e7ff47843e8b8c1405b56604916 |
| work_keys_str_mv |
AT zhongdp thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium AT peigs thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium AT xiangjy thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium AT panc thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium AT guw thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium AT lvxw thermodynamicbehaviorofdissolvedoxygenandhydrogeninpurevanadium |
| _version_ |
1718417745889984512 |