Purification of hydrogen from carbon monoxide for fuel cell application over modified mesoporous CuO-CeO2 catalysts

Handle URI:
http://hdl.handle.net/10754/561831
Title:
Purification of hydrogen from carbon monoxide for fuel cell application over modified mesoporous CuO-CeO2 catalysts
Authors:
Li, Jing; Han, Yuxi; Zhu, Yihan; Zhou, Renxian
Abstract:
Selective oxidation of CO in H2-rich streams was carried out over a series of CuO-CeO2 catalysts doped by different transition metals (Mn, Fe, Ni, Ti, Co and Cr). The effect of the dopants on the structure and catalytic properties of CuO-CeO2 catalysts was investigated by N2 adsorption/desorption, X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), Raman spectra and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) techniques. The results show that the addition of Mn and Fe plays a beneficial role in extending the low-temperature catalytic activity of CuO-CeO2 catalysts, whereas the introduction of Cr and Co leads to a negative effect on the catalytic activity and resistance against CO2 and H2O. The superior catalytic performance of CuO-CeO2 catalysts with Mn and Fe doping originates from the enhanced interaction between copper and ceria, owing to the formation of more Cu+ and oxygen vacancies in the solid solution framework. While the poor catalytic activity of the Co doped counterpart is mainly ascribed to the substitution of introduced cobalt ions for copper ions in ceria lattice, resulting in the segregation of copper ions from the ceria lattice and the consequent aggregation of copper species on the ceria surface. The doping of Cr into CuO-CeO2 structure remarkably weakens the interaction between copper and ceria, which decreases the reducibility of copper species and inhibits the formation of Cu+. It accounts for the lowest catalytic activity. © 2011 Elsevier B.V.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Advanced Membranes and Porous Materials Research Center
Publisher:
Elsevier BV
Journal:
Applied Catalysis B: Environmental
Issue Date:
Aug-2011
DOI:
10.1016/j.apcatb.2011.08.010
Type:
Article
ISSN:
09263373
Sponsors:
We gratefully acknowledge the financial support from the Ministry of Science and Technology of China (No. 2011AA03A406) as well as Science and Technology Department of Zhejiang Province (No. 2009R50020).
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorLi, Jingen
dc.contributor.authorHan, Yuxien
dc.contributor.authorZhu, Yihanen
dc.contributor.authorZhou, Renxianen
dc.date.accessioned2015-08-03T09:31:57Zen
dc.date.available2015-08-03T09:31:57Zen
dc.date.issued2011-08en
dc.identifier.issn09263373en
dc.identifier.doi10.1016/j.apcatb.2011.08.010en
dc.identifier.urihttp://hdl.handle.net/10754/561831en
dc.description.abstractSelective oxidation of CO in H2-rich streams was carried out over a series of CuO-CeO2 catalysts doped by different transition metals (Mn, Fe, Ni, Ti, Co and Cr). The effect of the dopants on the structure and catalytic properties of CuO-CeO2 catalysts was investigated by N2 adsorption/desorption, X-ray diffraction (XRD), H2 temperature-programmed reduction (H2-TPR), X-ray photoelectron spectroscopy (XPS), Raman spectra and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) techniques. The results show that the addition of Mn and Fe plays a beneficial role in extending the low-temperature catalytic activity of CuO-CeO2 catalysts, whereas the introduction of Cr and Co leads to a negative effect on the catalytic activity and resistance against CO2 and H2O. The superior catalytic performance of CuO-CeO2 catalysts with Mn and Fe doping originates from the enhanced interaction between copper and ceria, owing to the formation of more Cu+ and oxygen vacancies in the solid solution framework. While the poor catalytic activity of the Co doped counterpart is mainly ascribed to the substitution of introduced cobalt ions for copper ions in ceria lattice, resulting in the segregation of copper ions from the ceria lattice and the consequent aggregation of copper species on the ceria surface. The doping of Cr into CuO-CeO2 structure remarkably weakens the interaction between copper and ceria, which decreases the reducibility of copper species and inhibits the formation of Cu+. It accounts for the lowest catalytic activity. © 2011 Elsevier B.V.en
dc.description.sponsorshipWe gratefully acknowledge the financial support from the Ministry of Science and Technology of China (No. 2011AA03A406) as well as Science and Technology Department of Zhejiang Province (No. 2009R50020).en
dc.publisherElsevier BVen
dc.subjectCO selective oxidationen
dc.subjectCu+en
dc.subjectCuO-CeO2en
dc.subjectOxygen vacanciesen
dc.subjectTransition metalsen
dc.titlePurification of hydrogen from carbon monoxide for fuel cell application over modified mesoporous CuO-CeO2 catalystsen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.identifier.journalApplied Catalysis B: Environmentalen
dc.contributor.institutionInstitute of Catalysis, Zhejiang University, Hangzhou 310028, PR, Chinaen
kaust.authorZhu, Yihanen
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