Cited by 105Zeolite Catalysis and SynthesisClay minerals and soil interactionsChemical Synthesis and Characterization

Thermal and spectroscopic studies of zeolites exchanged with metal cations

Castaldi, Paola, Santona, Laura, Cozza, Claudio, Giuliano, Veronica, Abbruzzese, Carlo, Nastro, Valentina, Melis, Pietro·2005·Journal of Molecular Structure

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Crossref · 10.1016/j.molstruc.2004.09.009

Cites

29 of 29 references verified0 citation errors · 0 not checkable

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  • When ion exchange is performed, the water adsorption capacity of clinoptilolite may be modified due to the presence of cations with different charges and/or ionic radii in the framework.

    “when ion exchange is performed, the water adsorption capacity of clinoptilolite may be modified due to the presence of cations with different charges and/or ionic radii in the framework (Castaldi et al. 2005).”
  • Between 450 °C and 500 °C, structural water is lost and destruction of the zeolite framework occurs.

    “between 450 °C and 500 °C, structural water is lost and then the destruction of zeolite’s framework occurs.”
  • The amount of water lost in the 150-250 °C region is higher for clinoptilolite exchanged with bivalent cations because of greater interaction between these cations and water, resulting in higher thermal stability.

    “the amount of water lost in this region turned out to be higher for clinoptilolite exchanged with bivalent cations and this happened because of the grater interaction between these cations and water, which resulted also in higher thermal stability.”
  • Weakly bound water is lost between 60 and 150 °C, whereas water located in cavities and bound to extra-framework cations is lost at 150-250 °C.

    “weakly bound water was lost in the range between 60 and 150 °C whereas at 150–250 °C it was possible to observe the loss of water located in the cavities and bound to extra-framework cations.”
  • Thermo-analytical data proved the existence of three dehydration steps, depending on the type of water lost, occurring at three different temperatures.

    “the thermo-analytical data proved the existence of three “dehydration steps” (depending on the type of water lost), occurring at three different temperatures.”

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Authors
Castaldi, P., Santona, L., Cozza, C., Giuliano, V., Abbruzzese, C., Nastro, V., & Melis, P.
Affiliations
  • University of Sassari (IT)
  • Institute of Environmental Geology and Geoengineering (IT)
  • University of Calabria (IT)
Corresponding author
Melis, Pietro
Venue
Journal of Molecular Structure
Publisher
Elsevier BV
Published
2005-01
Volume
734
Issue
1-3
Pages
99-105
ISSN
0022-2860 (ISSN-L)
OpenAlex
W2057869295
Cited by
104
References
29
Citations by year
2026: 2 · 2025: 6 · 2024: 7 · 2023: 2 · 2022: 3 · 2021: 8 · 2020: 6 · 2019: 5 · 2018: 6 · 2017: 3 · 2016: 5 · 2015: 8 · 2014: 7 · 2013: 7 · 2012: 3
FWCI
1.38
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Molecular Structure (publishedVersion)
  • UnissResearch (Università degli Studi di Sassari) (submittedVersion)
Topics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
  • Physical Sciences › Materials Science › Biomaterials › Clay minerals and soil interactions
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Chemical Synthesis and Characterization
Keywords
zeolites, cation exchange, metal cations, thermal stability, water desorption, basicity, sodium, potassium, ammonium, lead, cadmium, zinc

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