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Citation: LIU Wen-Yuan, LI Hui, WANG De-Gui, LU Zhao-Da. Preparation and Thermal Decomposition of a Kind of Fluorine Source[J]. Chinese Journal of Applied Chemistry, ;2000, 17(3): 300-303. shu

Preparation and Thermal Decomposition of a Kind of Fluorine Source

1.
Northwest Institute of Nuclear Technology, Xi'an 710024

Received Date: 17 November 1999
Available Online: 21 February 2000
Fund Project: 国家"八六三"计划资助课题(863-416-6) (863-416-6)

The synthesis of potassium hexafluoronickelate(Ⅳ) on the condition of high temperature and high pressure and its decomposition at high temperature have been studied. The result showed that fluorine gas can be quickly absorbed by a mixture of potassium fluoride and nickel fluoride at temperature above 225℃ and pressure of about 2.0 MPa. The FT-IR spectra and Raman spectra verified the formation of potassium hexafluoronickelate(Ⅳ). When the temperature is raised to 250℃, potassium hexafluoronickelate(Ⅳ) will be decomposed to produce fluorine gas with a pressure reaching to 620 kPa at 350℃. The purity of fluorine is higher than 99%. It is suggested that potassium hexafluoronickelate(Ⅳ) can be used as a fluorine source.
- fluorine source,
- potassium hexafluoronickelate(Ⅳ),
- preparation,
- decomposition
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