Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination

Elena A. Glazkova, Olga V. Bakina

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The study focuses on the evolution of porous structure and texture of silica/alumina xerogels during calcination in the temperature range from 500 to 1200°C. The xerogel was prepared via sol-gel method using subcritical drying. The silica/alumina xerogels were examined using transmission electron microscopy-energy dispersive spectroscopy (TEM-EDS), Brunauer Emmett Teller-Barrett Joyner Halenda (BET-BJH), differential scanning calorimetry (DSC), and Fourier transform infrared (FTIR) spectroscopy. SiO2 primary particles of size about 10 nm are connected with each other to form a porous xerogel structure. Alumina is uniformly distributed over the xerogel volume. The changes of textural characteristics under heat treatment of samples are radical; the specific surface area and pore size attain their maximum at 500-700°C. The heat treatment of samples causes dehydroxylation of the xerogel surface, and at 1200°C the sample is sintered, loses mesoporosity, and its specific surface area reduces considerably down to 78 m2/g.

    Original languageEnglish
    Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
    PublisherAmerican Institute of Physics Inc.
    Volume1783
    ISBN (Electronic)9780735414457
    DOIs
    Publication statusPublished - 10 Nov 2016
    EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 - Tomsk, Russian Federation
    Duration: 19 Sep 201623 Sep 2016

    Conference

    ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
    CountryRussian Federation
    CityTomsk
    Period19.9.1623.9.16

    Fingerprint

    xerogels
    roasting
    textures
    aluminum oxides
    heat treatment
    silicon dioxide
    drying
    heat measurement
    infrared spectroscopy
    gels
    porosity
    transmission electron microscopy
    scanning
    causes
    spectroscopy

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Glazkova, E. A., & Bakina, O. V. (2016). Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 (Vol. 1783). [020061] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966354

    Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination. / Glazkova, Elena A.; Bakina, Olga V.

    Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016. 020061.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Glazkova, EA & Bakina, OV 2016, Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. vol. 1783, 020061, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016, Tomsk, Russian Federation, 19.9.16. https://doi.org/10.1063/1.4966354
    Glazkova EA, Bakina OV. Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783. American Institute of Physics Inc. 2016. 020061 https://doi.org/10.1063/1.4966354
    Glazkova, Elena A. ; Bakina, Olga V. / Evolution of porous structure and texture in nanoporous SiO2/Al2O3 materials during calcination. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016.
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