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Conference Paper: Chemical and transport behaviors in a microfluidic reformer with catalytic-support membrane for efficient hydrogen production and purification

TitleChemical and transport behaviors in a microfluidic reformer with catalytic-support membrane for efficient hydrogen production and purification
Authors
KeywordsAutothermal reforming
Hydrogen
Membrane
Microfluidics
Porous media
Issue Date2012
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydene
Citation
International Journal Of Hydrogen Energy, 2012, v. 37 n. 3, p. 2614-2622 How to Cite?
AbstractMicrochannel reformer integrated with H 2 selective membrane offers an efficient, compact and portable way to produce hydrogen. The performance of a membrane-based microfluidic reformer is restricted by species diffusion limitation within the porous support of the membrane. Recent development in novel catalytic-supported membranes has the potential to enhance H 2 production by decimating the diffusion limitation. Loading a Pd-Ag layer on to a Ni-catalytic porous support, the membrane achieves both H 2 separation and production functions. In this study, a two-dimensional CFD model combined with chemical kinetics has been developed to simulate a microchannel autothermal reformer fed by methane. The species conversion and transport behaviors have been studied. The results show that the permeation process enhances the mass transport within the catalytic layer, and as a result, the reactions are intensified. Most notably, the effectiveness factor of the water-gas shift reaction as high as 6 is obtained. In addition, the effects of gaseous hourly space velocity (GHSV) on methane conversion and H 2 flux through the membrane are also discussed, and an optimal value of GHSV is suggested. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Description2010 AIChE Annual Meeting Topical Conference on Hydrogen Production and Storage (Special Issue)
Persistent Identifierhttp://hdl.handle.net/10722/159046
ISSN
2015 Impact Factor: 3.205
2015 SCImago Journal Rankings: 1.330
ISI Accession Number ID
Funding AgencyGrant Number
CRCG of the University of Hong Kong
Funding Information:

This project is supported by the CRCG grant of the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorXuan, Jen_HK
dc.contributor.authorLeung, DYCen_HK
dc.contributor.authorLeung, MKHen_HK
dc.contributor.authorNi, Men_HK
dc.contributor.authorWang, Hen_HK
dc.date.accessioned2012-08-08T09:05:19Z-
dc.date.available2012-08-08T09:05:19Z-
dc.date.issued2012en_HK
dc.identifier.citationInternational Journal Of Hydrogen Energy, 2012, v. 37 n. 3, p. 2614-2622en_US
dc.identifier.issn0360-3199en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159046-
dc.description2010 AIChE Annual Meeting Topical Conference on Hydrogen Production and Storage (Special Issue)-
dc.description.abstractMicrochannel reformer integrated with H 2 selective membrane offers an efficient, compact and portable way to produce hydrogen. The performance of a membrane-based microfluidic reformer is restricted by species diffusion limitation within the porous support of the membrane. Recent development in novel catalytic-supported membranes has the potential to enhance H 2 production by decimating the diffusion limitation. Loading a Pd-Ag layer on to a Ni-catalytic porous support, the membrane achieves both H 2 separation and production functions. In this study, a two-dimensional CFD model combined with chemical kinetics has been developed to simulate a microchannel autothermal reformer fed by methane. The species conversion and transport behaviors have been studied. The results show that the permeation process enhances the mass transport within the catalytic layer, and as a result, the reactions are intensified. Most notably, the effectiveness factor of the water-gas shift reaction as high as 6 is obtained. In addition, the effects of gaseous hourly space velocity (GHSV) on methane conversion and H 2 flux through the membrane are also discussed, and an optimal value of GHSV is suggested. © 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydeneen_HK
dc.relation.ispartofInternational Journal of Hydrogen Energyen_HK
dc.subjectAutothermal reformingen_HK
dc.subjectHydrogenen_HK
dc.subjectMembraneen_HK
dc.subjectMicrofluidicsen_HK
dc.subjectPorous mediaen_HK
dc.titleChemical and transport behaviors in a microfluidic reformer with catalytic-support membrane for efficient hydrogen production and purificationen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLeung, DYC: ycleung@hku.hken_HK
dc.identifier.emailLeung, MKH:en_HK
dc.identifier.authorityLeung, DYC=rp00149en_HK
dc.identifier.authorityLeung, MKH=rp00148en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ijhydene.2011.10.091en_HK
dc.identifier.scopuseid_2-s2.0-84855836124en_HK
dc.identifier.hkuros200104-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84855836124&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume37en_HK
dc.identifier.issue3en_HK
dc.identifier.spage2614en_HK
dc.identifier.epage2622en_HK
dc.identifier.isiWOS:000301157300060-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridXuan, J=25722402300en_HK
dc.identifier.scopusauthoridLeung, DYC=7203002484en_HK
dc.identifier.scopusauthoridLeung, MKH=8862966600en_HK
dc.identifier.scopusauthoridNi, M=9268339800en_HK
dc.identifier.scopusauthoridWang, H=36844957100en_HK
dc.identifier.citeulike10047214-

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