Permeation of Adsorbable and Non-Adsorbable Gases in Microporous Zeolite Membranes
Patrícia F. Lito, Ana L. Magalhães, and Carlos M. Silva
CICECO, Departamento de Química, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
Daniel L. A. Fernandes
CESAM, Departamento de Química, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
A simple experiment is described to study the permeation of adsorbable and non-adsorbable gases through microporous membranes. The permeation fluxes of nitrogen and carbon dioxide through a zeolite membrane are measured at two temperatures for different trans-membrane pressure drops. Single gas permeances and the corresponding ideal selectivities are calculated as function of the pressure drop. Based on the experimental results, students are able to identify and discriminate transport mechanisms occurring in porous media and gain insight on fundamentals of membrane and diffusion processes.
Supplement
Formulas of the flux equations for the various transport mechanisms; List of gases, materials, and equipment used; Two figures showing a simplified layout and a detailed drawing of the membrane module
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