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  PFG‐NMR as a Tool for Determining Self‐Diffusivities of Various Probe Molecules through H‐ZSM‐5 Zeolites

Bingre, R., Losch, P., Megías‐Sayago, C., Vincent, B., Pale, P., Nguyen, P., et al. (2019). PFG‐NMR as a Tool for Determining Self‐Diffusivities of Various Probe Molecules through H‐ZSM‐5 Zeolites. ChemPhysChem, 20(21), 2874-2880. doi:10.1002/cphc.201900672.

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 Creators:
Bingre, Rogéria1, Author
Losch, Pit2, Author              
Megías‐Sayago, Cristina1, Author
Vincent, Bruno3, Author
Pale, Patrick3, Author
Nguyen, Patrick4, Author
Louis, Benoît1, Author
Affiliations:
1Energy and Fuel for a Sustainable Environment Team Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, UMR 7515 CNRS-ECPM, Université de Strasbourg, 25 rue Becquerel, F-67087 Strasbourg cedex, France, ou_persistent22              
2Research Group Schmidt, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445618              
3Institut de Chimie-UMR 7177, Université de Strasbourg, 1 rue Blaise Pascal, 67000 Strasbourg cedex, France, ou_persistent22              
4Saint-Gobain C.R.E.E., 550 Avenue Alphonse Jauffret, BP 224, 84306 Cavaillon cedex, France, ou_persistent22              

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Free keywords: crystal size; PFG-NMR; self-diffusion; Si/Al ratio; zeolite
 Abstract: The understanding of major zeolite applications is partially based on diffusion of molecules inside or outside microporous networks. However, it is still a challenge to measure such phenomena. The diffusion ordered nuclear magnetic resonance spectroscopy (DOSY) technique has been reported to measure a probe molecule‘s diffusion inside porous solids. Pulsed‐field gradient (PFG)‐NMR has been used herein to measure the self‐diffusivity of different probe molecules, such as neopentane, benzene, toluene and 1‐dodecene with increasing dynamic diameter, respectively, on a series of H‐ZSM‐5 zeolites. The latter materials exhibit different crystal sizes, Si/Al ratios and the presence (or absence) of crystalline defects. In addition, shaped zeolite bodies representing industrial catalysts were compared with the afore‐mentioned samples.

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Language(s): eng - English
 Dates: 2019-07-082019-09-102019-11-05
 Publication Status: Published online
 Pages: 7
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/cphc.201900672
 Degree: -

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Title: ChemPhysChem
Source Genre: Journal
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Publ. Info: Weinheim, Germany : Wiley-VCH
Pages: - Volume / Issue: 20 (21) Sequence Number: - Start / End Page: 2874 - 2880 Identifier: ISSN: 1439-4235
CoNE: https://pure.mpg.de/cone/journals/resource/954925409790