H2/CO2 permeation through a silicalite-1 composite membrane
Artikel i vetenskaplig tidskrift, 2011

Single and binary H2/CO2 gas permeation was studied through a silicalite-1 composite membrane consisting of a thin zeolite film (< 1 µm) supported on α-alumina. The temperature range for permeation measurements was 25 to 300°C. To determine the quality of the membrane, i.e the quantity and size of defects, n-hexane/helium permporometry measurements were performed. In general, single component fluxes decreased with increasing temperature whereas binary component fluxes showed a maximum value followed by a continuous decrease. A mass transport model that takes into account the surface diffusion and gas translational diffusion in the zeolite pores, Knudsen diffusion in defects, as well as viscous flow and Knudsen diffusion in the support material was developed to simulate the single and binary gas permeation measurements.

H2/CO2 permeation

membrane defects

zeolite composite membrane

gas translational diffusion

surface diffusion


Sang Wirawan

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

Derek Creaser

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

Jonas Lindmark

Jonas Hedlund

I Made Bendiyasa

Wahyudi Budi Sediawan

Journal of Membrane Science

0376-7388 (ISSN)

Vol. 375 313-322


Kemiska processer




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