Mesoporous titanosilicates by templated non-hydrolytic sol?gel reactions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14740%2F15%3A00080828" target="_blank" >RIV/00216224:14740/15:00080828 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/15:00443044

Výsledek na webu

<a href="http://link.springer.com/article/10.1007%2Fs10971-015-3666-8#" target="_blank" >http://link.springer.com/article/10.1007%2Fs10971-015-3666-8#</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10971-015-3666-8" target="_blank" >10.1007/s10971-015-3666-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mesoporous titanosilicates by templated non-hydrolytic sol?gel reactions

Popis výsledku v původním jazyce

A novel templated non-hydrolytic sol?gel synthesis of titanosilicate xerogels is reported. Acetamide elimination from silicon acetate and titanium diethylamide allows obtaining titanosilicates with a high content of Si-O-Ti bonds but low surface areas. These xerogels lose porosity on calcination. However, with addition of Pluronic P123 as a structure-directing agent, we synthesized mesoporous titanosilicate materials with large surface areas (up to 615 m2 g-1) and well dispersed tetrahedral Ti that arestable at temperatures up to 500 °C. These potential catalysts were characterized by variety of physico-chemical methods (IR, GC?MS, XRD, 29Si and 13C CPMAS NMR, DRUV-Vis, and N2 porosimetry) and tested in cyclohexene epoxidation with cumyl hydroperoxidein toluene. They display catalytic activity with the 100 % selectivity to cyclohexene oxide and high catalytic yields up to 96 % which is comparable to previously reported titanosilicate catalysts.

Název v anglickém jazyce

Mesoporous titanosilicates by templated non-hydrolytic sol?gel reactions

Popis výsledku anglicky

A novel templated non-hydrolytic sol?gel synthesis of titanosilicate xerogels is reported. Acetamide elimination from silicon acetate and titanium diethylamide allows obtaining titanosilicates with a high content of Si-O-Ti bonds but low surface areas. These xerogels lose porosity on calcination. However, with addition of Pluronic P123 as a structure-directing agent, we synthesized mesoporous titanosilicate materials with large surface areas (up to 615 m2 g-1) and well dispersed tetrahedral Ti that arestable at temperatures up to 500 °C. These potential catalysts were characterized by variety of physico-chemical methods (IR, GC?MS, XRD, 29Si and 13C CPMAS NMR, DRUV-Vis, and N2 porosimetry) and tested in cyclohexene epoxidation with cumyl hydroperoxidein toluene. They display catalytic activity with the 100 % selectivity to cyclohexene oxide and high catalytic yields up to 96 % which is comparable to previously reported titanosilicate catalysts.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CA - Anorganická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Sol-Gel Science and Technology

ISSN

0928-0707

e-ISSN

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Svazek periodika

74

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

810-822

Kód UT WoS článku

000354382000028

EID výsledku v databázi Scopus

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