title: Impact of the BEA zeolite morphology on isobutane adsorption followed by Reversed-Flow Inverse Gas Chromatography.
abstract: The mass transfer phenomena of isobutane (i-C4) were investigated at 343K on three protonic BEA zeolites. Defined by their crystallites sizes and degrees of aggregation, these samples were characterized by Reversed-Flow Inverse Gas Chromatography (RF-GC). This simple technique, used in conjunction with numerical computation, allowed the determination of physicochemical quantities like local monolayer capacities, probability density functions and diffusion coefficients in a time-resolved way. This study enabled to conclude that the effective diffusion coefficient was affected by the size of the zeolite agglomerate whereas the surface diffusion depended on the zeolite crystallite size.
authors.affiliation: Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), UMR 7285 CNRS/Université de Poitiers, 4 Rue Michel Brunet, 86022 Poitiers Cedex, France.
authors.forename: N
authors.initials: N
authors.lastname: Batalha
authors.forename: A
authors.initials: A
authors.lastname: Soualah
authors.forename: L
authors.initials: L
authors.lastname: Pinard
authors.forename: Y
authors.initials: Y
authors.lastname: Pouilloux
authors.forename: F
authors.initials: F
authors.lastname: Lemos
authors.forename: T
authors.initials: T
authors.lastname: Belin
mesh_terms: D000327:Adsorption; D002073:Butanes / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods*; D004058:Diffusion; D007700:Kinetics; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry*
chemical_list: D002073:Butanes; D017641:Zeolites