Hydrogen transport in composite inorganic membranes

Jorge Gabitto; Costas Tsouris

doi:10.1016/j.memsci.2007.12.061

Hydrogen transport in composite inorganic membranes

Jorge Gabitto, Costas Tsouris

Chemical Process Scale Up

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

A theoretical model simulating hydrogen transport through composite inorganic membranes is proposed. This model simulates operation of membranes made of three or more porous or metallic layers. Transport through Pd-alloy metallic layers is simulated using a comprehensive model proposed by Ward and Dao. The model accounts for external mass transfer, surface adsorption and desorption, transport to and from the bulk metal, and diffusion within the metal. Transport through porous ceramic layers is simulated following Burggraaf, who proposed an expression that combines viscous flow, Knudsen diffusion, and transition flow through porous media of complex geometrical structure. The model can also use experimentally determined permeance data when available. The theoretical model has been computationally implemented. Computations show very good agreement with experimental data available in the literature. The proposed model predicts hydrogen fluxes through composite membranes of several layers for standard operating conditions. The model can also predict which of the several layers used in manufacturing the membrane is controlling the total hydrogen flux. This information can be used to determine optimal thickness values for metallic and porous layers.

Original language	English
Pages (from-to)	132-142
Number of pages	11
Journal	Journal of Membrane Science
Volume	312
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2007.12.061
State	Published - Apr 1 2008

Funding

Support from the US Nuclear Regulatory Commission for Jorge Gabitto under the Historically Black Colleges and Universities Faculty Research Summer program is greatly appreciated. Also, support to Georgia Tech from the US Department of Energy, Office of Basic Energy Sciences, through The University of Tennessee, under Contract Number DE-FG02-05ER15723, is gratefully acknowledged. The authors are thankful to Dr. Marsha Savage for editing the manuscript.

Funders	Funder number
U.S. Department of Energy
Basic Energy Sciences
University of Tennessee	DE-FG02-05ER15723

Keywords

Composite inorganic membranes
Gas separation
Hydrogen separation

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10.1016/j.memsci.2007.12.061

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Hydrogen transport in composite inorganic membranes

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Keywords

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