About: Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts

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About: Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://link.springer.com/article/10.1007%2Fs10971-012-2808-5
Description	Novel non-hydrolytic syntheses of titanosilicate xerogels by polycondensation of silicon acetate, Si(OAc)4, with titanium (IV) dimethylamide or diethylamide, Ti(NR2)4 (R = Me, Et), are presented. The reactions are based on acetamide elimination and yield gels with a high content of Si-O-Ti bonds in comparison with the ester elimination route. Although a ligand exchange was observed, it was interestingly not followed by homo-condensation and during the synthesis the phase separation to SiO2 and TiO2 was avoided. The degree of condensation reached up to 68 %. The xerogels prepared for a comparison by ester elimination from Si(OAc)4 and titanium (IV) isopropoxide featured a significantly lower content of the Si-O-Ti bonds. The initial tests in the epoxidation of cyclohexene by cumyl hydroperoxide (CHP) indicated a high selectivity and moderate activity of the xerogels. Novel non-hydrolytic syntheses of titanosilicate xerogels by polycondensation of silicon acetate, Si(OAc)4, with titanium (IV) dimethylamide or diethylamide, Ti(NR2)4 (R = Me, Et), are presented. The reactions are based on acetamide elimination and yield gels with a high content of Si-O-Ti bonds in comparison with the ester elimination route. Although a ligand exchange was observed, it was interestingly not followed by homo-condensation and during the synthesis the phase separation to SiO2 and TiO2 was avoided. The degree of condensation reached up to 68 %. The xerogels prepared for a comparison by ester elimination from Si(OAc)4 and titanium (IV) isopropoxide featured a significantly lower content of the Si-O-Ti bonds. The initial tests in the epoxidation of cyclohexene by cumyl hydroperoxide (CHP) indicated a high selectivity and moderate activity of the xerogels. (en)
Title	Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts (en)
skos:prefLabel	Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts Non-Hydrolytic Synthesis of Titanosilicate Xerogels by Acetamide Elimination and their Use as Epoxidation Catalysts (en)
skos:notation	RIV/00216224:14740/12:00057761!RIV13-GA0-14740___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(GAP207/11/0555), P(LH11028)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Pinkas, Jiří Stýskalík, Aleš Škoda, David
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	154381
http://linked.open...ai/riv/idVysledku	RIV/00216224:14740/12:00057761
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Non-hydrolytic; amide elimination; titanosilicate; epoxidation; catalysis (en)
http://linked.open.../riv/klicoveSlovo	catalysis Non-hydrolytic amide elimination epoxidation titanosilicate
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[24594C48A5B8]
http://linked.open...i/riv/nazevZdroje	Journal of Sol-Gel Science and Technology
http://linked.open...in/vavai/riv/obor	CA
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology Metal Oxides and Phosphates as Nuclear Waste Forms: Sonochemical Precipitation, Thermal Transformations, and Solubility Studies Nonhydrolytic Sol-Gel Reactions for the Synthesis of Silicates and Phosphates with Controlled Porosity and Surface Functionality
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	63
http://linked.open...iv/tvurceVysledku	Pinkas, Jiří Škoda, David Stýskalík, Aleš Mathur, Sanjay
http://linked.open...ain/vavai/riv/wos	000310162700020
issn	0928-0707
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s10971-012-2808-5
http://localhost/t...ganizacniJednotka	14740

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