Basic Treatment in Natural Clinoptilolite for Improvement of Physicochemical Properties
Open accessAbstract
Natural zeolites are low in cost and exhibit interesting properties for applications in adsorption and catalysis. However, the fact that they are natural materials, not obtained in pure form, and can incorporate various compensating ions can compromise their properties and restrict their use. As their textural and chemical properties are of great relevance for adsorption and catalysis applications, this work aims to study the modification of the natural zeolite clinoptilolite to obtain materials with better physicochemical properties. Clinoptilolite was treated with NaOH under various conditions. The treated material was characterized by X-ray diffraction, X-ray fluorescence, N2 adsorption and desorption at 77 K, CO2 adsorption at 273 K, and pyridine adsorption. The treatment allowed the removal of silicon from the material, improving the textural properties and preserving the structural Al. With the removal of Si, the Si/Al ratio decreased, and consequently, the number of acid and adsorptive sites increased. In addition, statistical planning revealed that the concentration of NaOH is the parameter that most influences the improvement of the textural properties.
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Van Der Waals forces and electrostatic interactions between CO2 and clinoptilolite make these modifications feasible.
“This is feasible thanks to the presence of Van Der Waals forces and electrostatic interactions between CO2 and clinoptilolite (De Souza et al. 2018; Dosa et al. 2021; Kurama et al. 2002).”
From Fundamental properties and sustainable applications of the natural zeolite clinoptilolite (2024) · cites this paper as De Souza et al. 2018
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Senila, M., & Cadar, O. (2024) · Heliyon · doi:10.1016/j.heliyon.2024.e25303 · Cited by 161 · see citing works
Fundamental properties and sustainable applications of the natural zeolite clinoptilolite
Grifasi, N., Ziantoni, B., Fino, D., & Piumetti, M. (2024) · Environmental Science and Pollution Research · doi:10.1007/s11356-024-33656-5 · Cited by 88 · see citing works
“This is feasible thanks to the presence of Van Der Waals forces and electrostatic interactions between CO 2 and clinoptilolite (De Souza et al. 2018; Dosa et al. 2021; Kurama et al. 2002).”
- Authors
- De Souza, V. C., Villarroel-Rocha, J., De Araújo, M. J. G., Sapag, K., & Pergher, S. B. C.
- Affiliations
- Laboratório de Peneiras Moleculares (LABPEMOL), Universidade Federal do Rio Grande do Norte, Campus de Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
- Laboratorio de Sólidos Porosos (LabSoP), INFAP-CONICET, Universidad Nacional de San Luis, CEP 5700 San Luis, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (AR)
- Universidade Federal do Rio Grande do Norte (BR)
- Corresponding author
- Pergher, Sibele B. C.
- Venue
- Minerals
- Publisher
- MDPI AG
- Published
- 2018-12-14
- Volume
- 8
- Issue
- 12
- Pages
- 595
- ISSN
- 2075-163X (ISSN-L)
- OpenAlex
- W2904800650
- Cited by
- 35
- References
- 0
- Citations by year
- 2026: 2 · 2025: 7 · 2024: 12 · 2023: 4 · 2022: 2 · 2021: 4 · 2020: 3 · 2019: 1
- FWCI
- 0.73
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Minerals (publishedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (submittedVersion, cc-by-nc-sa)
- Funders
- Universidad Nacional de San Luis
- Coordenação de Aperfeiçoamento de Pessoal de Nível Superior ((Code 001))
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Topics
- Physical Sciences › Chemistry › Inorganic Chemistry › Zeolite Catalysis and Synthesis
- Physical Sciences › Materials Science › Biomaterials › Clay minerals and soil interactions
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- clinoptilolite, natural zeolite, zeolite modification, sodium hydroxide treatment, silicon removal, Si/Al ratio, textural properties, acid sites, CO2 adsorption, pyridine adsorption, statistical planning
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