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Article: Heterogeneous catalytic generation of hydrogen from formic acid under pressurized aqueous conditions

TitleHeterogeneous catalytic generation of hydrogen from formic acid under pressurized aqueous conditions
Authors
Issue Date2012
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecr
Citation
Industrial And Engineering Chemistry Research, 2012, v. 51 n. 13, p. 4861-4867 How to Cite?
Abstract
PtRuBiO x/C catalyst has shown the promise for catalyzing CO-free hydrogen generation from formic acid in aqueous solution at room temperature and atmospheric pressure. In order to produce hydrogen at moderate-pressure to feed into a fuel cell stack, postgeneration compression is needed to overcome the flow resistance. In the present study, liquid formic acid decomposition over the PtRuBiO x/C catalyst was investigated at temperatures ranging from 80 to 140 °C and pressure up to 350 psi. It was found that the selectivity of the catalyst for formic acid decomposition remained almost 100%, and a complete conversion of formic acid could be achieved in several hours, which is significantly shorter than that at ambient conditions. The overall activation energy was also found to be 78 kJ•mol -1 under present conditions. The increase from the previously determined value of 37 kJ/mol at open atmosphere pressure was due to carbon dioxide release beyond saturation at elevated pressures. Furthermore, the stability of the catalyst was confirmed by performing a series of repeated runs. © 2012 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/159292
ISSN
2013 Impact Factor: 2.235
ISI Accession Number ID
References

 

Author Affiliations
  1. The University of Hong Kong
DC FieldValueLanguage
dc.contributor.authorTing, SWen_HK
dc.contributor.authorHu, Cen_HK
dc.contributor.authorPulleri, JKen_HK
dc.contributor.authorChan, KYen_HK
dc.date.accessioned2012-08-16T05:48:26Z-
dc.date.available2012-08-16T05:48:26Z-
dc.date.issued2012en_HK
dc.identifier.citationIndustrial And Engineering Chemistry Research, 2012, v. 51 n. 13, p. 4861-4867en_HK
dc.identifier.issn0888-5885en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159292-
dc.description.abstractPtRuBiO x/C catalyst has shown the promise for catalyzing CO-free hydrogen generation from formic acid in aqueous solution at room temperature and atmospheric pressure. In order to produce hydrogen at moderate-pressure to feed into a fuel cell stack, postgeneration compression is needed to overcome the flow resistance. In the present study, liquid formic acid decomposition over the PtRuBiO x/C catalyst was investigated at temperatures ranging from 80 to 140 °C and pressure up to 350 psi. It was found that the selectivity of the catalyst for formic acid decomposition remained almost 100%, and a complete conversion of formic acid could be achieved in several hours, which is significantly shorter than that at ambient conditions. The overall activation energy was also found to be 78 kJ•mol -1 under present conditions. The increase from the previously determined value of 37 kJ/mol at open atmosphere pressure was due to carbon dioxide release beyond saturation at elevated pressures. Furthermore, the stability of the catalyst was confirmed by performing a series of repeated runs. © 2012 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/iecren_HK
dc.relation.ispartofIndustrial and Engineering Chemistry Researchen_HK
dc.titleHeterogeneous catalytic generation of hydrogen from formic acid under pressurized aqueous conditionsen_HK
dc.typeArticleen_HK
dc.identifier.emailChan, KY:hrsccky@hku.hken_HK
dc.identifier.authorityChan, KY=rp00662en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ie2030079en_HK
dc.identifier.scopuseid_2-s2.0-84859470872en_HK
dc.identifier.hkuros203312en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84859470872&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume51en_HK
dc.identifier.issue13en_HK
dc.identifier.spage4861en_HK
dc.identifier.epage4867en_HK
dc.identifier.isiWOS:000302833600012-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridTing, SW=25822814400en_HK
dc.identifier.scopusauthoridHu, C=24366536000en_HK
dc.identifier.scopusauthoridPulleri, JK=55177069700en_HK
dc.identifier.scopusauthoridChan, KY=7406034142en_HK

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