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@proceedings{1211534,
author = {Škoda, David and Barnes, Craig E and Pinkas, Jiří},
booktitle = {244th National Fall Meeting of the American-Chemical-Society (ACS)},
keywords = {Titanosilicates; Alumosilicates; Sol-Gel; Xerogel},
language = {eng},
title = {Titanosilicate and alumosilicate xerogels by nonhydrolytic sol-gel polycondensation reactions},
year = {2012}
}
TY - CONF
ID - 1211534
AU - Škoda, David - Barnes, Craig E - Pinkas, Jiří
PY - 2012
TI - Titanosilicate and alumosilicate xerogels by nonhydrolytic sol-gel polycondensation reactions
KW - Titanosilicates
KW - Alumosilicates
KW - Sol-Gel
KW - Xerogel
N2 - Titanosilicate xerogels were prepared by nonhydrolytic sol-gel polycondensation reactions between titanium alkoxides Ti(OR)4 (R = iPr, tBu) and acetoxysilanes R4-nSi(OAc)n where n = 1-4 and R = Me, Ph. The ester elimination reactions led to Si-O-Ti networks and acetic acid esters as byproducts. Alumosilicate xerogels were prepared by polycondensation reactions between Al(NMe2)3 or Al(OiPr)3 and acetoxysilanes R4-nSi(OAc)n where n = 1-4 and R = Me, Ph. These elimination reactions proceeded with the formation of Si-O-Al networks and released dimethylacetamide or acetic acid ester and as byproducts, respectively. We investigated the surface modification of these porous xerogels by a variety of reagents to eliminate residual organic groups and to chemically modify their surface. The resulting xerogels and volatile by products were characterized by liquid and solid-state NMR, IR, GC-MS, surface area analysis, TGA, and XRD.
ER -
ŠKODA, David, Craig E BARNES and Jiří PINKAS. Titanosilicate and alumosilicate xerogels by nonhydrolytic sol-gel polycondensation reactions. In \textit{244th National Fall Meeting of the American-Chemical-Society (ACS)}. 2012. ISSN~0065-7727.
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