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Original title:
Characterization of fine-grained montmorillonite fractions suitable for composite preparation
Authors: Valovičová, Věra ; Vaculíková, Lenka ; Plevová, Eva ; Dolinská, S. ; Znamenáčková, I. ; Danková, Z.
Document type: Papers
Conference/Event: NanoOstrava 2019 - Nanomaterials and Nanotechnology Meeting /6./, VŠB - Technická univerzita Ostrava (CZ), 20190513
Year: 2019
Language: eng
Abstract: 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.
Keywords: activation; characterization; composites; montmorillonite
Project no.: LO1406 (CEP)
Funding provider: GA MŠk
Host item entry: Book of Abstracts, NanoOstrava2019, ISBN 978-80-248-4290-5
Institution: Institute of Geonics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0298829
Permalink: http://www.nusl.cz/ntk/nusl-403624
The record appears in these collections:
Research > Institutes ASCR > Institute of Geonics
Conference materials > Papers
Authors: Valovičová, Věra ; Vaculíková, Lenka ; Plevová, Eva ; Dolinská, S. ; Znamenáčková, I. ; Danková, Z.
Document type: Papers
Conference/Event: NanoOstrava 2019 - Nanomaterials and Nanotechnology Meeting /6./, VŠB - Technická univerzita Ostrava (CZ), 20190513
Year: 2019
Language: eng
Abstract: 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.
Keywords: activation; characterization; composites; montmorillonite
Project no.: LO1406 (CEP)
Funding provider: GA MŠk
Host item entry: Book of Abstracts, NanoOstrava2019, ISBN 978-80-248-4290-5
Institution: Institute of Geonics AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0298829
Permalink: http://www.nusl.cz/ntk/nusl-403624
The record appears in these collections:
Research > Institutes ASCR > Institute of Geonics
Conference materials > Papers
Record created 2019-10-19, last modified 2021-11-24