J. Phys. IV France 11 (2001) Pr3-109-Pr3-113
Transition and rare earth metal fluorides as thermal sources of atomic and molecular fluorineJ.V. Rau1, N.S. Chilingarov1, M.S. Leskiv1, V.F. Sukhoverkhov2, V. Rossi Albertini3 and L.N. Sidorov1
1 Chemistry Department, M.V. Lomonosov Moscow State University, 119899 Moscow, Russia
2 Institute of General and lnorganic Chemistry, Russian Academy of Sciences, 117907 Moscow, Russia
3 Istituto di Struttura della Materia/CNR, Via del Fosso del Cavaliere 100, 00133 Roma, ltaly
Transition and rare earth metal fluorides (CoF3, K2NiF6, TbF4 and CeF4) are widely used as solid fluorinating agents. Their thermal decomposition leads to the release of gaseous fluorine. Knudsen cell mass spectrometry has been applied to investigate thermal decomposition of aforementioned fluorinating agents. The characteristic working interval of temperatures and composition of the gas phase for each compound have been determined. According to our findings, fluorine is released both in atomic and molecular forms. F is the main component of the gas phase during TbF4 and K2NiF6 decomposition, which can be used as thermal generators of atomic fluorine.
© EDP Sciences 2001