Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by
novel non-hydrolytic templated sol-gel synthesis

J 2016

Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis

ŠKODA, David; Aleš STÝSKALÍK; Zdeněk MORAVEC; Petr BEZDIČKA; Jiří BURŠÍK et al.

Základní údaje

Originální název

Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis

Autoři

ŠKODA, David; Aleš STÝSKALÍK; Zdeněk MORAVEC; Petr BEZDIČKA; Jiří BURŠÍK; P. Hubert MUTIN a Jiří PINKAS

Vydání

RSC Advances, Cambridge, Royal Society of Chemistry, 2016, 2046-2069

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10402 Inorganic and nuclear chemistry

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 3.108

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00090873

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

Tin Silicate; Mesoporous; Non-hydrolytic; Templated; Catalysis; Nanocomposite; Copolymer; Carbon

Štítky

rivok

Změněno: 22. 2. 2017 09:57, Mgr. Eva Špillingová

Anotace

V originále

A novel non-hydrolytic sol-gel (NHSG) synthesis of mesoporous tin silicate xerogels is presented. The polycondensation between silicon tetraacetate, Si(OAc)(4), and tetrakis(diethylamido)tin, Sn(NEt2)(4), resulting in acetamide elimination leads to tin silicate xerogels containing Si-O-Sn linkages. The addition of Pluronic P123 or F127 templates provides homogeneous stiff gels that are, after template removal by calcination at 500 degrees C in air, converted to stable mesoporous silica xerogels with large surface areas (476 m(2) g(-1)) and dispersed SnO2 nanoparticles (6-7 nm). Heat treatment of the as-prepared tin silicate gels in an inert N-2 atmosphere leads to reduction and transformation to Sn nanoparticles (70-150 nm) embedded in a silica-carbon matrix. The composition and morphology of the xerogels, volatile reaction byproducts, and thermal transformations were followed by elemental analyses, IR spectroscopy, thermal analysis TG-DSC, nitrogen adsorption measurements, solid-state NMR spectroscopy, DRUV-vis spectroscopy, electron microscopy, and HT powder XRD. The SnO2-SiO2 xerogels were tested as potential catalysts for aminolysis of styrene oxide with aniline and for the Meerwein-Ponndorf-Verley reduction of 4-tert-butylcyclohexanone. The resulting reaction systems displayed good activity and selectivity.

Návaznosti

LQ1601, projekt VaV

Název: CEITEC 2020 (Akronym: CEITEC2020)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, CEITEC 2020

Citovat

ŠKODA, David; Aleš STÝSKALÍK; Zdeněk MORAVEC; Petr BEZDIČKA; Jiří BURŠÍK; P. Hubert MUTIN a Jiří PINKAS. Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis. RSC Advances. Cambridge: Royal Society of Chemistry, 2016, roč. 6, č. 73, s. 68739-68747. ISSN 2046-2069. Dostupné z: https://doi.org/10.1039/c6ra16556g.

@article{1354622,
   author = {Škoda, David and Stýskalík, Aleš and Moravec, Zdeněk and Bezdička, Petr and Buršík, Jiří and Mutin, P. Hubert and Pinkas, Jiří},
   article_location = {Cambridge},
   article_number = {73},
   doi = {https://doi.org/10.1039/c6ra16556g},
   keywords = {Tin Silicate; Mesoporous; Non-hydrolytic; Templated; Catalysis; Nanocomposite; Copolymer; Carbon},
   language = {eng},
   issn = {2046-2069},
   journal = {RSC Advances},
   title = {Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis},
   url = {http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA16556G#!divAbstract},
   volume = {6},
   year = {2016}
}

TY  - JOUR
ID  - 1354622
AU  - Škoda, David - Stýskalík, Aleš - Moravec, Zdeněk - Bezdička, Petr - Buršík, Jiří - Mutin, P. Hubert - Pinkas, Jiří
PY  - 2016
TI  - Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis
JF  - RSC Advances
VL  - 6
IS  - 73
SP  - 68739-68747
EP  - 68739-68747
PB  - Royal Society of Chemistry
SN  - 20462069
KW  - Tin Silicate
KW  - Mesoporous
KW  - Non-hydrolytic
KW  - Templated
KW  - Catalysis
KW  - Nanocomposite
KW  - Copolymer
KW  - Carbon
UR  - http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA16556G#!divAbstract
L2  - http://pubs.rsc.org/en/Content/ArticleLanding/2016/RA/C6RA16556G#!divAbstract
N2  - A novel non-hydrolytic sol-gel (NHSG) synthesis of mesoporous tin silicate xerogels is presented. The polycondensation between silicon tetraacetate, Si(OAc)(4), and tetrakis(diethylamido)tin, Sn(NEt2)(4), resulting in acetamide elimination leads to tin silicate xerogels containing Si-O-Sn linkages. The addition of Pluronic P123 or F127 templates provides homogeneous stiff gels that are, after template removal by calcination at 500 degrees C in air, converted to stable mesoporous silica xerogels with large surface areas (476 m(2) g(-1)) and dispersed SnO2 nanoparticles (6-7 nm). Heat treatment of the as-prepared tin silicate gels in an inert N-2 atmosphere leads to reduction and transformation to Sn nanoparticles (70-150 nm) embedded in a silica-carbon matrix. The composition and morphology of the xerogels, volatile reaction byproducts, and thermal transformations were followed by elemental analyses, IR spectroscopy, thermal analysis TG-DSC, nitrogen adsorption measurements, solid-state NMR spectroscopy, DRUV-vis spectroscopy, electron microscopy, and HT powder XRD. The SnO2-SiO2 xerogels were tested as potential catalysts for aminolysis of styrene oxide with aniline and for the Meerwein-Ponndorf-Verley reduction of 4-tert-butylcyclohexanone. The resulting reaction systems displayed good activity and selectivity.
ER  -

ŠKODA, David; Aleš STÝSKALÍK; Zdeněk MORAVEC; Petr BEZDIČKA; Jiří BURŠÍK; P. Hubert MUTIN a Jiří PINKAS. Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesis. \textit{RSC Advances}. Cambridge: Royal Society of Chemistry, 2016, roč.~6, č.~73, s.~68739-68747. ISSN~2046-2069. Dostupné z: https://doi.org/10.1039/c6ra16556g.

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