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Do Sodium Oxofluoroaluminates Exist at Room Temperature?

✍ Scribed by Marián Kucharík; Miroslav Boča; Catherine Bessada; Hartmut Fuess

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
141 KB
Volume
2005
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

Alumina dissolution in cryolite melts is currently associated with the formation of oxofluorospecies. Mixtures of Na~3~AlF~6~ and Al~2~O~3~ were heated under different conditions of temperature, time and atmosphere. The existence of oxofluorospecies in solidified samples at room temperature was investigated by X‐ray diffraction, IR and Magic Angle Spinning NMR spectroscopy. The formation of β‐alumina (NaAl~11~O~17~) was detected depending on the heating conditions, but no oxofluoroaluminate species were found. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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