Hollow fibre membrane reactors for high H2 yields in the WGS reaction

F R García-García, Laura Torrente Murciano, D Chadwick, K Li

Research output: Contribution to journalArticle

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Abstract

Alumina hollow fibres with narrow pore size distribution and high surface area/volume ratio are presented as a cost-effective alternative support for metallic membranes which can potentially ease the large-scale implementation of membrane reactors. In this article, we demonstrate the formation of a defect-free thin (∼5μm) Pd/Ag layer over the smooth outer surface of hollow fibres with high H 2 permeation fluxes (48.41Lm -2h -1 at 450°C and ΔP 0.5 of 1.01atm 0.5) and 100% H 2 perm-selectivity. Their use in hollow fibre membrane reactors (HFMR) allows the selective extraction of H 2 from the reaction medium, especially relevant in H 2-formation equilibrium reactions. Thus, the water-gas shift reaction was used as a proof-reaction. When the HFMR is combined with a highly stable and active nanostructured Pt/CeO 2 catalyst, enhanced selectivities and activities are achieved as a result of the integration of the reaction and separation steps. The best results were obtained at high temperatures (375-525°C) where the thermodynamic equilibrium conversion was exceeded by up to 14%.
LanguageEnglish
Pages30-37
Number of pages8
JournalJournal of Membrane Science
Volume405-406
Early online date28 Feb 2012
DOIs
StatusPublished - 1 Jul 2012

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hollow
reactors
membranes
Membranes
fibers
Fibers
selectivity
Water gas shift
Catalyst selectivity
Aluminum Oxide
Thermodynamics
Permeation
Pore size
Catalyst activity
thermodynamic equilibrium
Alumina
Gases
Fluxes
Costs and Cost Analysis
aluminum oxides

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García-García, F. R., Torrente Murciano, L., Chadwick, D., & Li, K. (2012). Hollow fibre membrane reactors for high H2 yields in the WGS reaction. DOI: 10.1016/j.memsci.2012.02.031

Hollow fibre membrane reactors for high H2 yields in the WGS reaction. / García-García, F R; Torrente Murciano, Laura; Chadwick, D; Li, K.

In: Journal of Membrane Science, Vol. 405-406, 01.07.2012, p. 30-37.

Research output: Contribution to journalArticle

García-García, FR, Torrente Murciano, L, Chadwick, D & Li, K 2012, 'Hollow fibre membrane reactors for high H2 yields in the WGS reaction' Journal of Membrane Science, vol. 405-406, pp. 30-37. DOI: 10.1016/j.memsci.2012.02.031
García-García FR, Torrente Murciano L, Chadwick D, Li K. Hollow fibre membrane reactors for high H2 yields in the WGS reaction. Journal of Membrane Science. 2012 Jul 1;405-406:30-37. Available from, DOI: 10.1016/j.memsci.2012.02.031
García-García, F R ; Torrente Murciano, Laura ; Chadwick, D ; Li, K. / Hollow fibre membrane reactors for high H2 yields in the WGS reaction. In: Journal of Membrane Science. 2012 ; Vol. 405-406. pp. 30-37
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