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S. S. Berdonosov, S. B. Baronov, J. V. Kuzmicheva, D. G. Berdonosova, I. V. Melikhov
New fine textured form of amorphous
alumina in the form of hollow macrotubes
Abstract
By heating of partially hydrolyzed AlCl3
in the flow of the gas (hydrogen, helium, air) at normal pressure the new form
of amorphous alumina was obtained in the form of long hollow tubes with length
up to 4-6 cm and diameter up to 250-300 micrometers. Amorphous material of the
tubes was characterized by means of chemical analysis, electronic and
atomic-force microscopy, local microanalysis, NMR (27Al)- and
FTIR-spectra, X-ray diffraction analysis. The possible mechanism is proposed.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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