mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-90Research ArticleСтатьиInvestigation of molecular mobility and exchange of n-hexane and water in silicalite-1 by 2D 1H NMR relaxometryGizatullinB. I.

Kremlevskaya 18, Kazan 420008; Unterpoerlitzer 38, Ilmenau 98693, Germany

SavinkovA. V.

Kremlevskaya 18, Kazan 420008

andrey.savinkov@gmail.comShipunovT. V.

Kremlevskaya 18, Kazan 420008

MelnikovaD. L.

Kremlevskaya 18, Kazan 420008

DoroginitzkyM. M.

Kremlevskaya 18, Kazan 420008

SkirdaV. D.

Kremlevskaya 18, Kazan 420008

Kazan Federal University; Ilmenau Technical UniversityRussian FederationKazan Federal UniversityRussian Federation20180404201820118102 (9 pp.)Copyright © Gizatullin B.I., Savinkov A.V., Shipunov T.V., Melnikova D.L., Doroginitzky M.M., Skirda V.D., 20242024Gizatullin B.I., Savinkov A.V., Shipunov T.V., Melnikova D.L., Doroginitzky M.M., Skirda V.D.Gizatullin B.I., Savinkov A.V., Shipunov T.V., Melnikova D.L., Doroginitzky M.M., Skirda V.D.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/90

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.

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The authors declare that there are no conflicts of interest present.