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

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F16%3A00462668" target="_blank" >RIV/68081723:_____/16:00462668 - isvavai.cz</a>

  • Alternative codes found

    RIV/61388980:_____/16:00462668 RIV/00216224:14740/16:00090873

  • Result on the web

    <a href="http://dx.doi.org/10.1039/c6ra16556g" target="_blank" >http://dx.doi.org/10.1039/c6ra16556g</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1039/c6ra16556g" target="_blank" >10.1039/c6ra16556g</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

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

  • Original language description

    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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2016

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    RSC Advances

  • ISSN

    2046-2069

  • e-ISSN

  • Volume of the periodical

    6

  • Issue of the periodical within the volume

    73

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    9

  • Pages from-to

    68739-68747

  • UT code for WoS article

    000381512600023

  • EID of the result in the Scopus database

    2-s2.0-84979901995