期刊
JOURNAL OF FLUORINE CHEMISTRY
卷 141, 期 -, 页码 64-68出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jfluchem.2012.06.012
关键词
Zirconium; Hafnium; Zirconium oxide; Hafnium oxide; Zirconium tetrafluoride; Hafnium tetrafluoride; Thermogravimetry
资金
- Department of Science and Technology under the Advanced Metals Initiative
Zircon mineral contains about 1-3% hafnium which is an undesirable impurity in the nuclear industry. A novel dry fluorination route was investigated to produce ZrF4 as a possible intermediate for the production of nuclear grade zirconium metal. The process was investigated by the reaction of pure ZrO2 and HfO2 with anhydrous hydrogen fluoride using a thermogravimetric analyzer. The findings indicate successful formation of ZrF4, HfF4, and oxyfluorides identified with X-ray powder diffraction. According to the TGA experiments, the stoichiometric formation of ZrF4 was realized at 525 degrees C whilst that for HfF4 was not attained. (C) 2012 Published by Elsevier B.V.
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