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Statements

Subject Item
n2:RIV%2F00216224%3A14740%2F14%3A00076455%21RIV15-MSM-14740___
rdf:type
skos:Concept n16:Vysledek
dcterms:description
Non-hydrolytic sol-gel reactions are viable alternatives to classical aqueous techniques in the area of synthesis of multimetallic oxides and inorganic-organic hybrid materials in the form of xerogels, nanoparticles, and thin films. We developed a non-hydrolytic sol-gel route based on acetic acid ester elimination providing silicophosphate hybrid inorganic-organic materials. The polycondensation reactions between Si(OAc)4 and OP(OSiMe3)3 lead to microporous xerogels with surface areas up to 568 m2 g-1. The structure of xerogels was built up exclusively from Si-O-P bonds and contained octahedrally coordinated silicon atoms, which are characteristic for crystalline silicon phosphates.1 We changed starting precursors to acetoxysilanes and phosphonic acid esters with bridging alkyl or aryl groups (AcO)3Si-(CH2)x-Si(OAc)3 (x = 1-3, 6), (Me3SiO)2P(O)-3R-P(O)(OSiMe3)2 (3R = C2H4, C6H4). Non-hydrolytic sol-gel reactions are viable alternatives to classical aqueous techniques in the area of synthesis of multimetallic oxides and inorganic-organic hybrid materials in the form of xerogels, nanoparticles, and thin films. We developed a non-hydrolytic sol-gel route based on acetic acid ester elimination providing silicophosphate hybrid inorganic-organic materials. The polycondensation reactions between Si(OAc)4 and OP(OSiMe3)3 lead to microporous xerogels with surface areas up to 568 m2 g-1. The structure of xerogels was built up exclusively from Si-O-P bonds and contained octahedrally coordinated silicon atoms, which are characteristic for crystalline silicon phosphates.1 We changed starting precursors to acetoxysilanes and phosphonic acid esters with bridging alkyl or aryl groups (AcO)3Si-(CH2)x-Si(OAc)3 (x = 1-3, 6), (Me3SiO)2P(O)-3R-P(O)(OSiMe3)2 (3R = C2H4, C6H4).
dcterms:title
Thermal evolution of silicophosphate gels: Porosity and structure Thermal evolution of silicophosphate gels: Porosity and structure
skos:prefLabel
Thermal evolution of silicophosphate gels: Porosity and structure Thermal evolution of silicophosphate gels: Porosity and structure
skos:notation
RIV/00216224:14740/14:00076455!RIV15-MSM-14740___
n3:aktivita
n14:P
n3:aktivity
P(ED1.1.00/02.0068), P(EE2.3.30.0037), P(LH11028)
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n7:7592132 n7:6119409 n7:2274329 n7:2451077
n3:druhVysledku
n15:O
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n8:predkladatel
n3:idSjednocenehoVysledku
50318
n3:idVysledku
RIV/00216224:14740/14:00076455
n3:jazykVysledku
n11:eng
n3:klicovaSlova
silicophosphate; sol-gel; nonhydrolytic
n3:klicoveSlovo
n9:nonhydrolytic n9:silicophosphate n9:sol-gel
n3:kontrolniKodProRIV
[055EA7CDE714]
n3:obor
n12:CA
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
5
n3:projekt
n5:ED1.1.00%2F02.0068 n5:EE2.3.30.0037 n5:LH11028
n3:rokUplatneniVysledku
n4:2014
n3:tvurceVysledku
Barnes, Craig E. Stýskalík, Aleš Pinkas, Jiří Škoda, David Moravec, Zdeněk
n6:organizacniJednotka
14740