Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry

Molecular mobility and exchange of adsorbed fluid in porous media of silicalite-1 were studied by two-dimensional nuclear magnetic resonance (NMR) techniques in fully and partly saturated samples. Three porous volumes were determined in silicalite-1 where n-hexane and water molecules are adsorbed: i...

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Main Authors:	B.I. Gizatullin, A.V. Savinkov, T.V. Shipunov, D.L. Melnikova, M.M. Doroginitzky, V.D. Skirda
Format:	Article
Language:	English
Published:	Kazan Federal University 2018-04-01
Series:	Magnetic Resonance in Solids
Subjects:	Nuclear magnetic resonance silicalite-1 molecular exchange T1-T2 and T2-T2 correlations
Online Access:	http://mrsej.kpfu.ru/contents/2018/MRSej_18102.pdf

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spelling	doaj-f29f54c0ef5048beaff24785ddcfe5982020-11-24T21:48:39ZengKazan Federal UniversityMagnetic Resonance in Solids2072-59812018-04-0120118102Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometryB.I. Gizatullin0A.V. Savinkov1T.V. Shipunov2D.L. Melnikova3M.M. Doroginitzky4V.D. Skirda5Kazan Federal University, Kremlevskaya 18, Kazan 420008, Russia; Ilmenau Technical University, Unterpoerlitzer 38, Ilmenau 98693, GermanyKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaKazan Federal University, Kremlevskaya 18, Kazan 420008, RussiaMolecular mobility and exchange of adsorbed fluid in porous media of silicalite-1 were studied by two-dimensional nuclear magnetic resonance (NMR) techniques in fully and partly saturated samples. Three porous volumes were determined in silicalite-1 where n-hexane and water molecules are adsorbed: intracrystallite channels, mesopores and intercrystallite space. The molecular exchange between all porous volumes was observed and typical exchange times were estimated for n-hexane and water. Using the exchange times the self-diffusion coefficients were estimated as D ~ 1.11×10−10 for n-hexane and D ~ 6.67×10−11 m2/s for water in fully saturated silicalite-1 and found in a good agreement with literature data.http://mrsej.kpfu.ru/contents/2018/MRSej_18102.pdfNuclear magnetic resonancesilicalite-1molecular exchangeT1-T2 and T2-T2 correlations
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	B.I. Gizatullin A.V. Savinkov T.V. Shipunov D.L. Melnikova M.M. Doroginitzky V.D. Skirda
spellingShingle	B.I. Gizatullin A.V. Savinkov T.V. Shipunov D.L. Melnikova M.M. Doroginitzky V.D. Skirda Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry Magnetic Resonance in Solids Nuclear magnetic resonance silicalite-1 molecular exchange T1-T2 and T2-T2 correlations
author_facet	B.I. Gizatullin A.V. Savinkov T.V. Shipunov D.L. Melnikova M.M. Doroginitzky V.D. Skirda
author_sort	B.I. Gizatullin
title	Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry
title_short	Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry
title_full	Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry
title_fullStr	Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry
title_full_unstemmed	Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry
title_sort	investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2d 1h nmr relaxometry
publisher	Kazan Federal University
series	Magnetic Resonance in Solids
issn	2072-5981
publishDate	2018-04-01
description	Molecular mobility and exchange of adsorbed fluid in porous media of silicalite-1 were studied by two-dimensional nuclear magnetic resonance (NMR) techniques in fully and partly saturated samples. Three porous volumes were determined in silicalite-1 where n-hexane and water molecules are adsorbed: intracrystallite channels, mesopores and intercrystallite space. The molecular exchange between all porous volumes was observed and typical exchange times were estimated for n-hexane and water. Using the exchange times the self-diffusion coefficients were estimated as D ~ 1.11×10−10 for n-hexane and D ~ 6.67×10−11 m2/s for water in fully saturated silicalite-1 and found in a good agreement with literature data.
topic	Nuclear magnetic resonance silicalite-1 molecular exchange T1-T2 and T2-T2 correlations
url	http://mrsej.kpfu.ru/contents/2018/MRSej_18102.pdf
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Investigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometry

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