Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite

The (1)H nuclear magnetic resonance (NMR) spectra and the dipolar spin–lattice relaxation time T(1D) for (1)H in the natural natrolite (Na(2)Al(2)Si(3)O(10)·2H(2)O) have been measured in the temperature range of 190–390 K. From the temperature transformations of (1)H NMR spectra, it follows that at...

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Autores principales: Paczwa, M., Sapiga, A. A., Olszewski, M., Sergeev, N. A., Sapiga, A. V.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Vienna 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956723/
https://www.ncbi.nlm.nih.gov/pubmed/27489405
http://dx.doi.org/10.1007/s00723-016-0805-5
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author Paczwa, M.
Sapiga, A. A.
Olszewski, M.
Sergeev, N. A.
Sapiga, A. V.
author_facet Paczwa, M.
Sapiga, A. A.
Olszewski, M.
Sergeev, N. A.
Sapiga, A. V.
author_sort Paczwa, M.
collection PubMed
description The (1)H nuclear magnetic resonance (NMR) spectra and the dipolar spin–lattice relaxation time T(1D) for (1)H in the natural natrolite (Na(2)Al(2)Si(3)O(10)·2H(2)O) have been measured in the temperature range of 190–390 K. From the temperature transformations of (1)H NMR spectra, it follows that at T > 300 K, the diffusion of water molecules along the nano-channels is observed. From experimental T(1D) data, it follows that the 180° flip motion of the water molecules takes place in natrolite. At low temperature (T < 250 K), the dipolar interaction with paramagnetic impurities as a relaxation mechanism of (1)H nuclei becomes significant.
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spelling pubmed-49567232016-08-01 Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite Paczwa, M. Sapiga, A. A. Olszewski, M. Sergeev, N. A. Sapiga, A. V. Appl Magn Reson Article The (1)H nuclear magnetic resonance (NMR) spectra and the dipolar spin–lattice relaxation time T(1D) for (1)H in the natural natrolite (Na(2)Al(2)Si(3)O(10)·2H(2)O) have been measured in the temperature range of 190–390 K. From the temperature transformations of (1)H NMR spectra, it follows that at T > 300 K, the diffusion of water molecules along the nano-channels is observed. From experimental T(1D) data, it follows that the 180° flip motion of the water molecules takes place in natrolite. At low temperature (T < 250 K), the dipolar interaction with paramagnetic impurities as a relaxation mechanism of (1)H nuclei becomes significant. Springer Vienna 2016-06-25 2016 /pmc/articles/PMC4956723/ /pubmed/27489405 http://dx.doi.org/10.1007/s00723-016-0805-5 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Paczwa, M.
Sapiga, A. A.
Olszewski, M.
Sergeev, N. A.
Sapiga, A. V.
Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title_full Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title_fullStr Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title_full_unstemmed Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title_short Proton Dipolar Spin–Lattice Relaxation in Nano-channels of Natrolite
title_sort proton dipolar spin–lattice relaxation in nano-channels of natrolite
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4956723/
https://www.ncbi.nlm.nih.gov/pubmed/27489405
http://dx.doi.org/10.1007/s00723-016-0805-5
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