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Open AccessArticle

Sorption of Heavy Metal Cations on Mesoporous ZSM-5 and Mordenite Zeolites

1
Faculty of Materials Science and Ceramics, Department of Silicate Chemistry and Macromolecular Compounds, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
2
Faculty of Chemistry, Jagiellonian University in Kraków, Gronostajowa 2, 30-387 Krakow, Poland
3
Faculty of Geology, Geophysics and Environmental Protection, Department of Mineralogy, Petrography and Geochemistry, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
*
Author to whom correspondence should be addressed.
Materials 2019, 12(19), 3271; https://doi.org/10.3390/ma12193271
Received: 30 August 2019 / Revised: 2 October 2019 / Accepted: 4 October 2019 / Published: 8 October 2019
Desilication and dealumination techniques were used to obtain mesoporous ZSM-5 and mordenite zeolites. The study provides insight into specific structural, textural, and sorption properties of obtained materials with different Si/Al ratios. Subsequent dealumination and desilication procedures were found to be efficient methods of generating a secondary system of mesopores in mordenite and ZSM-5 crystals while preserving their microporous character. The investigated materials were evaluated in terms of their sorption properties of selected heavy metal cations (Cd2+, Cr3+, and Pb2+). Particular emphasis was placed on the structural examination of the materials via infrared spectroscopy (FT-IR). Other research methods included X-ray diffraction (XRD), X-ray fluorescence (XRF), nuclear magnetic resonance (NMR) and atomic absorption spectrometry (AAS). View Full-Text
Keywords: mordenite; ZSM-5; mesoporosity; sorption properties; heavy metal cations; IR spectroscopy mordenite; ZSM-5; mesoporosity; sorption properties; heavy metal cations; IR spectroscopy
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Wojciechowska, K.M.; Król, M.; Bajda, T.; Mozgawa, W. Sorption of Heavy Metal Cations on Mesoporous ZSM-5 and Mordenite Zeolites. Materials 2019, 12, 3271.

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