Atomic fluorine in thermal reactions involving solid TbF4

Citation
Ns. Chilingarov et al., Atomic fluorine in thermal reactions involving solid TbF4, J FLUORINE, 104(2), 2000, pp. 291-295
Citations number
19
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF FLUORINE CHEMISTRY
ISSN journal
00221139 → ACNP
Volume
104
Issue
2
Year of publication
2000
Pages
291 - 295
Database
ISI
SICI code
0022-1139(200007)104:2<291:AFITRI>2.0.ZU;2-U
Abstract
The Knudsen cell mass spectrometry method has been applied in order to inve stigate TbF4(s) thermal decomposition and solid-phase fluorination reaction s in the CoF3(s)-TbF4(s) system. It has been found that atomic fluorine is the main component of the gas phase during TbF4(s) decomposition, and no eq uilibrium is established between atomic and molecular fluorine at T=600-640 K. It is supposed that solid-phase reaction of fluorination includes the f ormation of an intermediate with participation of CoF3 and TbF4 in the cond ensed phase. The decomposition of the intermediate leads to the evaporation of CoF4 molecules into the gas phase. (C) 2000 Elsevier Science S.A. All r ights reserved.