Concentration dependence of intracrystalline self-diffusion in zeolites

Concentration dependence of intracrystalline self-diffusion in zeolites

The nmr pulsed field gradient technique is applied to study molecular self-diffusion in zeolitic adsorbate—adsorbent systems. Depending on the zeolite type and on the nature of the adsorbate—adsorbent interaction, the concentration dependence of the self-diffusion coefficients reveals considerable d...

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Main Authors: H. Pfeifer, J. KÄRger, A. Germanus, W. Schirmer, M. BÜLow, J. Caro
Format: Article
Language:English
Published: Hindawi - SAGE Publishing 1985-12-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1177/026361748500200403
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spelling doaj-ffa2385a4ffc4afb873edf8290d184f62021-04-02T13:32:22ZengHindawi - SAGE PublishingAdsorption Science & Technology0263-61742048-40381985-12-01210.1177/026361748500200403Concentration dependence of intracrystalline self-diffusion in zeolitesH. Pfeifer0J. KÄRger1A. Germanus2W. Schirmer3M. BÜLow4J. Caro5Sektion Physik der Karl-Marx-Universität Leipzig, Linnéstr. 5, DDR-7010 LeipzigSektion Physik der Karl-Marx-Universität Leipzig, Linnéstr. 5, DDR-7010 LeipzigSektion Physik der Karl-Marx-Universität Leipzig, Linnéstr. 5, DDR-7010 LeipzigZentralinstitut für physikalische Chemie der Akademie der Wissenschaften der DDR, Rudower Chausse 5, DDR-1199 Berlin, German Democratic RepublicZentralinstitut für physikalische Chemie der Akademie der Wissenschaften der DDR, Rudower Chausse 5, DDR-1199 Berlin, German Democratic RepublicZentralinstitut für physikalische Chemie der Akademie der Wissenschaften der DDR, Rudower Chausse 5, DDR-1199 Berlin, German Democratic RepublicThe nmr pulsed field gradient technique is applied to study molecular self-diffusion in zeolitic adsorbate—adsorbent systems. Depending on the zeolite type and on the nature of the adsorbate—adsorbent interaction, the concentration dependence of the self-diffusion coefficients reveals considerable differences. Furthermore, intracrystalline molecular transport may be significantly influenced by the co-adsorption of a second molecular species. Supported by additional nuclear magnetic relaxation and sorption rate measurements microdynamic models for the observed diffusion behaviour are established.https://doi.org/10.1177/026361748500200403
collection DOAJ
language English
format Article
sources DOAJ
author H. Pfeifer
J. KÄRger
A. Germanus
W. Schirmer
M. BÜLow
J. Caro
spellingShingle H. Pfeifer
J. KÄRger
A. Germanus
W. Schirmer
M. BÜLow
J. Caro
Concentration dependence of intracrystalline self-diffusion in zeolites
Adsorption Science & Technology
author_facet H. Pfeifer
J. KÄRger
A. Germanus
W. Schirmer
M. BÜLow
J. Caro
author_sort H. Pfeifer
title Concentration dependence of intracrystalline self-diffusion in zeolites
title_short Concentration dependence of intracrystalline self-diffusion in zeolites
title_full Concentration dependence of intracrystalline self-diffusion in zeolites
title_fullStr Concentration dependence of intracrystalline self-diffusion in zeolites
title_full_unstemmed Concentration dependence of intracrystalline self-diffusion in zeolites
title_sort concentration dependence of intracrystalline self-diffusion in zeolites
publisher Hindawi - SAGE Publishing
series Adsorption Science & Technology
issn 0263-6174
2048-4038
publishDate 1985-12-01
description The nmr pulsed field gradient technique is applied to study molecular self-diffusion in zeolitic adsorbate—adsorbent systems. Depending on the zeolite type and on the nature of the adsorbate—adsorbent interaction, the concentration dependence of the self-diffusion coefficients reveals considerable differences. Furthermore, intracrystalline molecular transport may be significantly influenced by the co-adsorption of a second molecular species. Supported by additional nuclear magnetic relaxation and sorption rate measurements microdynamic models for the observed diffusion behaviour are established.
url https://doi.org/10.1177/026361748500200403
work_keys_str_mv AT hpfeifer concentrationdependenceofintracrystallineselfdiffusioninzeolites
AT jkarger concentrationdependenceofintracrystallineselfdiffusioninzeolites
AT agermanus concentrationdependenceofintracrystallineselfdiffusioninzeolites
AT wschirmer concentrationdependenceofintracrystallineselfdiffusioninzeolites
AT mbulow concentrationdependenceofintracrystallineselfdiffusioninzeolites
AT jcaro concentrationdependenceofintracrystallineselfdiffusioninzeolites
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