The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions
The 1 H NMR spectral technique has been applied to the study of samples of ZSM-5-type zeolites. These samples were synthesized using the template procedure and possessed various aluminium concentrations in their crystal lattice. The characteristics of the adsorbed water layers and the values of the...
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פורמט: | Article |
שפה: | English |
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SAGE Publishing
2000-02-01
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סדרה: | Adsorption Science & Technology |
גישה מקוונת: | https://doi.org/10.1260/0263617001493297 |
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author | V.V. Turov V.V. Brei K.N. Khomenko R. Leboda |
author_facet | V.V. Turov V.V. Brei K.N. Khomenko R. Leboda |
author_sort | V.V. Turov |
collection | DOAJ |
description | The 1 H NMR spectral technique has been applied to the study of samples of ZSM-5-type zeolites. These samples were synthesized using the template procedure and possessed various aluminium concentrations in their crystal lattice. The characteristics of the adsorbed water layers and the values of the free surface energy of the adsorbents were determined. It was established that, for aqueous suspensions of zeolites, the highest concentration of water in the pores was characteristic of the sample containing the lowest amount of aluminium. It was suggested that the amount of water in the pores is determined not so much by the concentration of primary adsorption sites as by the conditions under which the development of water clusters occurs as well as by the competing sorption of water and ambient air. |
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language | English |
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spelling | doaj.art-80218c76589749dbafef71b9404ca43c2025-01-02T22:37:59ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382000-02-011810.1260/0263617001493297The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous SuspensionsV.V. Turov0V.V. Brei1K.N. Khomenko2R. Leboda3 Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauki 31, 25260 Kiev, Ukraine Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauki 31, 25260 Kiev, Ukraine Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauki 31, 25260 Kiev, Ukraine Faculty of Chemistry, Maria Curie-Sklodowska University, Pl. Maria Curie-Sklodowskiej 2, 20-031 Lublin, PolandThe 1 H NMR spectral technique has been applied to the study of samples of ZSM-5-type zeolites. These samples were synthesized using the template procedure and possessed various aluminium concentrations in their crystal lattice. The characteristics of the adsorbed water layers and the values of the free surface energy of the adsorbents were determined. It was established that, for aqueous suspensions of zeolites, the highest concentration of water in the pores was characteristic of the sample containing the lowest amount of aluminium. It was suggested that the amount of water in the pores is determined not so much by the concentration of primary adsorption sites as by the conditions under which the development of water clusters occurs as well as by the competing sorption of water and ambient air.https://doi.org/10.1260/0263617001493297 |
spellingShingle | V.V. Turov V.V. Brei K.N. Khomenko R. Leboda The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions Adsorption Science & Technology |
title | The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions |
title_full | The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions |
title_fullStr | The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions |
title_full_unstemmed | The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions |
title_short | The Influence of Aluminium Concentration on the Hydration of ZSM-5-Type Zeolites in Aqueous Suspensions |
title_sort | influence of aluminium concentration on the hydration of zsm 5 type zeolites in aqueous suspensions |
url | https://doi.org/10.1260/0263617001493297 |
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