Název: Characterization of fine-grained montmorillonite fractions suitable for composite preparation
Autoři: Valovičová, Věra ; Vaculíková, Lenka ; Plevová, Eva ; Dolinská, S. ; Znamenáčková, I. ; Danková, Z.
Typ dokumentu: Příspěvky z konference
Konference/Akce: NanoOstrava 2019 - Nanomaterials and Nanotechnology Meeting /6./, VŠB - Technická univerzita Ostrava (CZ), 20190513
Rok: 2019
Jazyk: eng
Abstrakt: The aim of this experimental study was to characterize a fine-grained fraction of montmorillonites (SAz-2, STx-1, SWy-2 and Kunipia-F). It was investigated in order to provide more precise information of used montmorillonites than could be obtained by analysis of the unfractioned montmorillonites. At first, the fine fraction of montmorillonites were prepared by sedimentation and activation by means of Na2CO3. The prepared clay materials were characterized by the X-ray diffraction analysis and FTIR spectroscopy. The thermal behaviour of the studied samples was determinated according to the characteristic temperatures obtained from TG/DTA curves. The temperatures of dehydratation and dehydroxylation were evaluated and kinetic parameters were also calculated. The porosity and surface properties of the studied samples were gained by the nitrogen adsorption measurements. The obtained results confirmed that the fine fraction of montmorillonites could be a suitable material for subsequent preparation of composites with enhanced sorption properties, especially montmorillonite/MnO2 composite.
Klíčová slova: activation; characterization; composites; montmorillonite
Číslo projektu: LO1406 (CEP)
Poskytovatel projektu: GA MŠk
Zdrojový dokument: Book of Abstracts, NanoOstrava2019, ISBN 978-80-248-4290-5

Instituce: Ústav geoniky AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v repozitáři Akademie věd.
Původní záznam: http://hdl.handle.net/11104/0298829

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-403624


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav geoniky
Konferenční materiály > Příspěvky z konference
 Záznam vytvořen dne 2019-10-19, naposledy upraven 2019-10-20.


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