Please use this identifier to cite or link to this item: http://elartu.tntu.edu.ua/handle/lib/23123

Title: The Competitive Diffusion of Gases in a Nanoporous Zeolite Using a Slice Selection Procedure
Authors: Leclerc, S.
Petryk, M.
Canet, D.
Khimitch, A.
Mykhalyk, D.
Fraissard, J.
Affiliation: LEMTA - UMR 7563 CNRS-Nancy-Université, F-54504 Vandoeuvre-lès-Nancy Cedex, France
Modélisation du Transfert de Masse, University Ivan Pul’uy, 46001 Ternopil, Ukraine
Institut Jean Barriol (CNRS 2843), Université de Lorraine, F-54506 Vandœuvre-lès-Nancy Cedex,
Glushkov Institute of Cybernetics of NAS of Ukraine, 40 Glushkova av., 03187 Kyiv, Ukraine
Sorbonne Universités, UPMC Univ Paris 06, UFR Chimie, F-75005 Paris, France
ESPCI, UMR 8213, LPEM, 10 rue Vauquelin, F-75231 Paris Cedex 05, France
Bibliographic description (Ukraine): S. Leclerc The Competitive Diffusion of Gases in a Nanoporous Zeolite Using a Slice Selection Procedure [Текст] / М.S. Leclerc, M. Petryk, D. Canet, A. Khimitch, D.Mykhalyk, J. Fraissarde // Euromar conferense 2017. – 2-6 July 2017, Warsaw, Poland
Bibliographic description (International): S. Leclerc The Competitive Diffusion of Gases in a Nanoporous Zeolite Using a Slice Selection Procedure [Text] / М.S. Leclerc, M. Petryk, D. Canet, A. Khimitch, D.Mykhalyk, J. Fraissarde // Euromar conferense 2017. – 2-6 July 2017, Warsaw, Poland
Conference/Event: Euromar conferense 2017
Issue Date: Jun-2017
Country (code): PL
Place of the edition/event: 2-6 July 2017, Hotel Marriott, Warsaw
Number of pages: 1
Abstract: The study of the co-diffusion of several gases through a microporous solid and of the resulting instantaneous distribution (out of equilibrium) of the adsorbed phases is particularly important in many fields, such as gas separation, heterogeneous catalysis, etc. Classical H NMR imaging is a good technique for visualizing these processes but, since the signal obtained is not specific for each gas, each experiment has to be performed several times under identical conditions, and each time with only one incompletely deuterated gas. In contrast, we have proposed a new NMR imaging technique (based on the so-called NMR slice selection procedure) which gives a signal characteristic of each adsorbed gas. It can therefore provide directly, at every moment and at every level of the crystallite bed, the distribution of several gases competing in diffusion and adsorption. Solutions to the direct and inverse problems are based on Heaviside’s operational method and Laplace integral transformation. New procedures for identifying diffusion coefficients for co- diffusing components (benzene and hexane) in intra- and intercrystallite spaces were implemented, using high-speed gradient methods and mathematical diffusion models, as well as the NMR spectra of the adsorbed mass distribution of each component in the zeolite bed. These diffusion coefficients were obtained as a function of time for different positions along the bed. Benzene and hexane concentrations in the inter- and intracrystallite spaces were calculated for every position in the bed and for different adsorption times.
URI: http://elartu.tntu.edu.ua/handle/lib/23123
Copyright owner: (c) Euromar 2017
Content type: Conference Abstract
Appears in Collections:Навчальна література кафедри програмної інженерії

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