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Conference Paper: Formic acid dehydrogenation over PtRuBiO x/C catalyst for generation of CO-free hydrogen in a continuous-flow reactor

TitleFormic acid dehydrogenation over PtRuBiO x/C catalyst for generation of CO-free hydrogen in a continuous-flow reactor
Authors
KeywordsDehydrogenation
Formic Acid
Hydrogen
Kinetics
Stability
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. 8, p. 6372-6380 How to Cite?
AbstractLiquid-phase formic acid dehydrogenation using a solid carbon supported PtRuBiO x catalyst offers a promising and convenient method to produce CO-free hydrogen. In this study, the regenerability of the catalyst and the kinetics of formic acid dehydrogenation were investigated in a continuous-flow reactor. The kinetic experiments were carried out at temperatures between 300 and 333 K and formic acid concentrations ranging from 1.3 to 8.0 mol/L. It was found that an Arrhenius temperature dependence of the kinetic constant could represent the kinetics of formic acid dehydrogenation over the catalyst. The kinetics had first-order dependence for HCOO - and half-order with respect to HCOOH under the investigated conditions. The average apparent activation energy was determined to be about 38.1 kJ/mol, which is close to the previous value (37.3 kJ/mol) obtained in a batch reactor. To gain more insight into the formic acid dehydrogenation over the catalyst, two possible mechanisms with adsorption of HCOOH or HCOO - were proposed based on the experimental results and available information in literature. Two kinetic expressions were derived from the proposed reaction mechanisms. The corresponding kinetic parameters were estimated and further correlated with the apparent activation energies obtained at different formic acid concentrations. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.
Persistent Identifierhttp://hdl.handle.net/10722/168883
ISSN
2015 Impact Factor: 3.205
2015 SCImago Journal Rankings: 1.330
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHu, Cen_US
dc.contributor.authorTing, SWen_US
dc.contributor.authorTsui, Jen_US
dc.contributor.authorChan, KYen_US
dc.date.accessioned2012-10-08T03:35:26Z-
dc.date.available2012-10-08T03:35:26Z-
dc.date.issued2012en_US
dc.identifier.citationInternational Journal Of Hydrogen Energy, 2012, v. 37 n. 8, p. 6372-6380en_US
dc.identifier.issn0360-3199en_US
dc.identifier.urihttp://hdl.handle.net/10722/168883-
dc.description.abstractLiquid-phase formic acid dehydrogenation using a solid carbon supported PtRuBiO x catalyst offers a promising and convenient method to produce CO-free hydrogen. In this study, the regenerability of the catalyst and the kinetics of formic acid dehydrogenation were investigated in a continuous-flow reactor. The kinetic experiments were carried out at temperatures between 300 and 333 K and formic acid concentrations ranging from 1.3 to 8.0 mol/L. It was found that an Arrhenius temperature dependence of the kinetic constant could represent the kinetics of formic acid dehydrogenation over the catalyst. The kinetics had first-order dependence for HCOO - and half-order with respect to HCOOH under the investigated conditions. The average apparent activation energy was determined to be about 38.1 kJ/mol, which is close to the previous value (37.3 kJ/mol) obtained in a batch reactor. To gain more insight into the formic acid dehydrogenation over the catalyst, two possible mechanisms with adsorption of HCOOH or HCOO - were proposed based on the experimental results and available information in literature. Two kinetic expressions were derived from the proposed reaction mechanisms. The corresponding kinetic parameters were estimated and further correlated with the apparent activation energies obtained at different formic acid concentrations. Copyright © 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhydeneen_US
dc.relation.ispartofInternational Journal of Hydrogen Energyen_US
dc.subjectDehydrogenationen_US
dc.subjectFormic Aciden_US
dc.subjectHydrogenen_US
dc.subjectKineticsen_US
dc.subjectStabilityen_US
dc.titleFormic acid dehydrogenation over PtRuBiO x/C catalyst for generation of CO-free hydrogen in a continuous-flow reactoren_US
dc.typeConference_Paperen_US
dc.identifier.emailChan, KY:hrsccky@hku.hken_US
dc.identifier.authorityChan, KY=rp00662en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.ijhydene.2012.01.062en_US
dc.identifier.scopuseid_2-s2.0-84859217458en_US
dc.identifier.hkuros203316-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84859217458&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume37en_US
dc.identifier.issue8en_US
dc.identifier.spage6372en_US
dc.identifier.epage6380en_US
dc.identifier.isiWOS:000303952300005-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridHu, C=24366536000en_US
dc.identifier.scopusauthoridTing, SW=25822814400en_US
dc.identifier.scopusauthoridTsui, J=36864355400en_US
dc.identifier.scopusauthoridChan, KY=7406034142en_US
dc.identifier.citeulike10363354-

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