Non-Hydrolytic Sol-Gel Synthesis of Metallosilicates and Phosphosilicates from Silicon Acetate
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F13%3A00069403" target="_blank" >RIV/00216224:14740/13:00069403 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Non-Hydrolytic Sol-Gel Synthesis of Metallosilicates and Phosphosilicates from Silicon Acetate
Original language description
We studied non-hydrolytic sol-gel reactions to prepare several classes of metallosilicate and phosphosilicate hybrid inorganic-organic materials based on polycondensation reactions between silicon acetate or acetoxysilanes 1RxSi(OC(O)CH3)4-x (1R = Me, Ph; n = 0-2) and phosphoric and phosphonic acid trimethylsilylesters 2RP(O)(OSiMe3)2 (2R = OSiMe3, c-Hex, Ph), metal amides M(N3R2)n (M = Al, Ti; 3R = Me, Et; n = 3, 4) and metal alkoxides M(O4R)n (M = Al, Ti; 4R = i-Pr, t-Bu, SiMe3; n = 3, 4) in aprotic dry solvents. Phosphosilicate xerogels were prepared by the elimination of acetic acid ester from Si(OC(O)CH3)4 and P(O)(OSiMe3)3. The 29Si CPMAS NMR spectra revealed the presence of two types of six-coordinate silicon centers SiO6. The surface area and condensation degree could be controlled by the reaction parameters, such as solvent, temperature, and time. Mixtures of silicon acetate and acetoxysilanes and trimethylsilyl phosphates provided hybrid gels.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Result continuities
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)
Others
Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů