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| Preparations of Titanium Dichloride and Trichloride in NaCl-KCl Melt |
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Received:November 10, 2016
Revised:November 14, 2016
Accepted:November 15, 2016
Published Online:February 21, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.03.004 |
| KeyWord:titanium dichloride and trichloride; average valence; Ti2 system; Ti3 system |
| Author | Institution |
| ZHU Fu-xing |
成都理工大学材料与化学化工学院;攀钢集团研究院有限公司 |
| QIU Ke-Hui |
成都理工大学材料与化学化工学院 |
| SUN Zhao-hui |
攀钢集团研究院有限公司 |
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| Abstract: |
| The average valence state of titanium ions under different raw materials, titanium ions concentrations, and temperatures was studied by XRD. The results show that TiCl2 is obtained from reaction of TiCl4 and titanium sponge when titanium sponge excess. TiCl2 can be oxidized to K3TiCl6 by HCl, but partially oxidized by TiCl4. The average valence state of titanium ions drops with increase of titanium ions concentration in Ti3 system, but remains essentially constant in Ti2 system. With increase of temperature, average valence state of titanium ions drops in Ti3 system, but rises in Ti2 system due to drop of Gibbs Free Energy of disproportionation reaction. |
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