Authors:
M. Földesová Slovak University of Technology Faculty of Chemical Technology 81237 Bratislava Slovak Republic 81237 Bratislava Slovak Republic

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P. Lukáč Slovak University of Technology Faculty of Chemical Technology 81237 Bratislava Slovak Republic 81237 Bratislava Slovak Republic

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P. Dillinger Slovak University of Technology Faculty of Chemical Technology 81237 Bratislava Slovak Republic 81237 Bratislava Slovak Republic

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V. Balek Nuclear Research Institute Rež plc Czech Republic Rež plc Czech Republic

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S. Svetík Slovak University of Technology Faculty of Chemical Technology 81237 Bratislava Slovak Republic 81237 Bratislava Slovak Republic

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Abstract  

Zeolites chemically modified with 1, 4 or 6 M aqueous solutions of NaOH were studied by DTA, TG and ETA (emanation thermal analysis) in the temperature range 201–200°C. The structural changes in the modified zeolites at room temperature and in the modified zeolites annealed at 1000°C were studied by XRD analysis. Thermal analysis demonstrated dehydration, dehydroxylation, structural changes and a glass transition. A gradual loss in crystallinity of the chemically modified zeolites was also observed. XRD analysis revealed structural changes caused by chemical treatment and also by annealing.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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