About: Mesoporous Metallosilicates Prepared by Nonhydrolytic Acetamide Elimination

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Non-hydrolytic sol-gel reactions are efficient alternatives to classical aqueous techniques for synthesis of multimetallic oxides and inorganic-organic hybrid materials. This processes provides better reaction control and higher homogeneity of prepared materials. We developed nonhydrolytic sol-gel routes to several groups of metallosilicate materials based on acetamide elimination reactions. This approach is based on the condensation reaction of silicon tetraacetate Si(OAc)4 and metal amides (Ti(NEt2)4, Zr(NEt2)4). Reactions were performed at different molar ratios. Nonhydrolytic condensation leads to formation the Si–O–Ti and Si–O–Zr bonds in the xerogel framework. Diethylacetamide and acetanhydride were confirmed (GC-MS, 1H NMR) as the reaction byproducts. To achieve the mesoporous nature of the material, the reaction was successfully modified by the addition of the Pluronic P123. This copolymer has structure-directing and protecting feature and allows to prepare tough gels. Non-hydrolytic sol-gel reactions are efficient alternatives to classical aqueous techniques for synthesis of multimetallic oxides and inorganic-organic hybrid materials. This processes provides better reaction control and higher homogeneity of prepared materials. We developed nonhydrolytic sol-gel routes to several groups of metallosilicate materials based on acetamide elimination reactions. This approach is based on the condensation reaction of silicon tetraacetate Si(OAc)4 and metal amides (Ti(NEt2)4, Zr(NEt2)4). Reactions were performed at different molar ratios. Nonhydrolytic condensation leads to formation the Si–O–Ti and Si–O–Zr bonds in the xerogel framework. Diethylacetamide and acetanhydride were confirmed (GC-MS, 1H NMR) as the reaction byproducts. To achieve the mesoporous nature of the material, the reaction was successfully modified by the addition of the Pluronic P123. This copolymer has structure-directing and protecting feature and allows to prepare tough gels. (en)
Title	Mesoporous Metallosilicates Prepared by Nonhydrolytic Acetamide Elimination Mesoporous Metallosilicates Prepared by Nonhydrolytic Acetamide Elimination (en)
skos:prefLabel	Mesoporous Metallosilicates Prepared by Nonhydrolytic Acetamide Elimination Mesoporous Metallosilicates Prepared by Nonhydrolytic Acetamide Elimination (en)
skos:notation	RIV/00216224:14740/14:00076458!RIV15-MSM-14740___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(EE2.3.30.0037), P(LH11028)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Pinkas, Jiří Moravec, Zdeněk Stýskalík, Aleš Škoda, David
http://linked.open.../riv/druhVysledku	O - Ostatní výsledky nezařaditelné do žádného z výše uvedených druhů výsledku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Středoevropský technologický institut
http://linked.open...dnocenehoVysledku	28501
http://linked.open...ai/riv/idVysledku	RIV/00216224:14740/14:00076458
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Metallosilicates; Titanosilicates; Zirconosilicates; Mesoporous; Non-hydrolytic; Acetamide; Catalysis; Epoxidation (en)
http://linked.open.../riv/klicoveSlovo	Epoxidation Mesoporous Catalysis Non-hydrolytic Titanosilicates Acetamide Metallosilicates Zirconosilicates
http://linked.open...ontrolniKodProRIV	[BA830E872926]
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Employment of Best Young Scientists for International Cooperation Empowerment Central european institute of technology Nonhydrolytic Sol-Gel Reactions for the Synthesis of Silicates and Phosphates with Controlled Porosity and Surface Functionality
http://linked.open...UplatneniVysledku	2014
http://linked.open...iv/tvurceVysledku	Moravec, Zdeněk Pinkas, Jiří Škoda, David Stýskalík, Aleš Barnes, Craig E.
http://localhost/t...ganizacniJednotka	14740

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