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Nesterenko P. N., Nesterenko E. P., Ivanov A. V.
Modification
of Silica Surface with Alumina
Abstract
The
technique of silica surface modification with alumina using aluminum
triethoxide was worked out for the first time. It was shown by IR-spectra that
modification took place only on silica surface. It was shown by nitrogen
adsorption method that sorbent surface area decreased by 30% in comparison with
silica. The sorbent obtained was used for normal phase HPLC of aromatic
carbohydrates. Silica modified with alumina retains aromatic carbohydrates
weaker then silica, what is connected with the change of chemical properties of
sorbent and its surface area.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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