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Download fileCompetitive Diffusion of Gases in a Zeolite Bed: NMR and Slice Selection Procedure, Modeling, and Parameter Identification
journal contribution
posted on 2015-11-25, 00:00 authored by M. Petryk, S. Leclerc, D. Canet, I. Sergienko, V. Deineka, J. FraissardTaking
into account the previous experimental results obtained by NMR, new
procedures for identifying diffusion coefficients for codiffusing
benzene and hexane in intra- and intercrystallite spaces of ZSM 5
zeolite 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.