Titanosilicate and alumosilicate xerogels by nonhydrolytic sol-gel polycondensation reactions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F12%3A00077592" target="_blank" >RIV/00216224:14740/12:00077592 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Titanosilicate and alumosilicate xerogels by nonhydrolytic sol-gel polycondensation reactions
Original language description
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.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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