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Die Thermische Deintercalation Von Graphitintercalationsverbindungen der Arsen- und Antimonchloridfluoride by H. Preiss; E. Alsdorf; A. Lehmann is a Materials Science article available to read on EtoBox.

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In the reaction of AsCI,F, with graphite, intercalation compounds of stage n = 3 are produced with an identity period of 1, = 1.49 nm. The stoichiometry of the compounds varies in consequence of the dissociation and dismutation reactions of AsCl,F,. The exfoliation of the crystals and the release of chlorine have been observed during heat treatment. The maximum thermal deintercalation is between 350 and 440°C. Only chlorine and arsenic trihalides, no pentahalides, have been detected by mass spectrometric analysis of the pyrolysis gases. Thermogravimetric investigations of SbCl,F,\_, graphite intercalation compounds as well as mass spectrometric analyses of the pyrolysis gases show that in the deintercalation of the original intercalated pentahalides, their thermal dissociation as well as dismutation by halogen exchange overlap in the course of thermal decomposition. The conversion of stage 1 SbCl,F giaphite to stage fand the-formation of dilute stage 2 SbCI, graphite as well as SbCl,F graphite take olace at 80-110°C. A hieh concentration of the oentahalides SbCl, and SbCLF respectively and a low ioncentration of trihalidis have been found by kass spectrometjin the gas.pha& at So-il

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Author

H. Preiss; E. Alsdorf; A. Lehmann

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0008-6223)

Published

1987

Language

EN

Field

Materials Science (Physical Sciences)