Gas permeation through nanoporous membranes in the transitional flow region

Nanotechnology
D I Petukhov, A A Eliseev

Abstract

An experimental study on the permeability of anodic alumina (20-120 nm) and track-etched (30 nm) nanoporous membranes for different gases in the transitional flow regime is reported in the range of Knudsen numbers from 0.1 to 10. A significant variation (up to 30%) of the membrane permeance for different gases at the same Knudsen numbers is reported with certainty. It is established that this discrepancy relates to a molecule's effective collision area, which is poorly described in the frameworks of conventional gas permeation models. Two models are proposed for the description of the effect: self-diffusion of penetrate gases due to intermolecular collisions and enhancement of the slip flow contribution due to tangential momentum accommodation growth with the decrease of a molecule's effective collision area. The best fit parameters for the simultaneous fit of the experimental data with different models for 30 membrane-gas pairs are given.

References

Jan 1, 1987·Blood Purification·C K Colton
Jul 8, 2009·Nanotechnology·S UnnikrishnanM C Elwenspoek
Jul 31, 2012·Nanotechnology·D I PetukhovA A Eliseev
Sep 26, 2012·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A E VelascoP Taborek
Jul 24, 2013·ACS Applied Materials & Interfaces·Dmitrii I PetukhovAndrey A Eliseev

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Citations

Apr 7, 2017·Beilstein Journal of Nanotechnology·Dmitrii I PetukhovAndrei A Eliseev
Sep 11, 2018·Journal of Colloid and Interface Science·Navaladian SubramanianHimanshu Mishra
Aug 10, 2021·Physical Chemistry Chemical Physics : PCCP·Stepan K PodgolinAndrei A Eliseev
Aug 19, 2020·ACS Applied Materials & Interfaces·Benjamin BesserJorg Thöming
Nov 26, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·P ApelA Yaroshchuk

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