Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

S. Zeng; Y. Wang; Siyuan Ding; J.J.H.B. Sattler; E. Borodina; L. Zhang; B.M. Weckhuysen; H. Su

doi:10.1016/j.jpowsour.2014.01.098

Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

S. Zeng, Y. Wang, Siyuan Ding, J.J.H.B. Sattler, E. Borodina, L. Zhang, B.M. Weckhuysen, H. Su

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

A series of CuO/CeO 2 and inverse CeO 2 /CuO catalysts are prepared by the surfactant-templated method and characterized via XRD, HRTEM, H 2 -TPR, SEM, XPS, in situ XRD, in situ UV-Vis and N 2 adsorption-desorption techniques. It is found that there are two kinds of surface sites in the CuO-CeO 2 system, including CuO surface sites for CO chemisorption and CeO 2 surface sites with oxygen vacancies for oxygen sorption. The active sites for CO oxidation are located on the contact interface of two-kind surface sites and the lattice oxygen can make a significant contri bution to the CO-PROX reaction. The resistance to H 2 O and CO 2 is related to BET surface area, the crystallite sizes of CuO and the reduction behavior of catalysts. The Ce4Cu4 and Ce4Cu1 catalysts exhibit the best resistance against H 2 O and CO 2 . © 2014 Elsevier B.V. All rights reserved.

Original language	English
Journal	Journal of Power Sources
Volume	256
DOIs	https://doi.org/10.1016/j.jpowsour.2014.01.098
Publication status	Published - 2014

Keywords

Active site
Copper-ceria catalysts
Hydrogen
Preferential CO oxidation

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10.1016/j.jpowsour.2014.01.098

http://www.mendeley.com/research/active-sites-cuoceoinf2inf-inverse-ceoinf2infcuo-catalysts-preferential-co-oxidation

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@article{a95d6ba3dc9a40df92265b33cfd66b3f,

title = "Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation",

abstract = "A series of CuO/CeO 2 and inverse CeO 2 /CuO catalysts are prepared by the surfactant-templated method and characterized via XRD, HRTEM, H 2 -TPR, SEM, XPS, in situ XRD, in situ UV-Vis and N 2 adsorption-desorption techniques. It is found that there are two kinds of surface sites in the CuO-CeO 2 system, including CuO surface sites for CO chemisorption and CeO 2 surface sites with oxygen vacancies for oxygen sorption. The active sites for CO oxidation are located on the contact interface of two-kind surface sites and the lattice oxygen can make a significant contri bution to the CO-PROX reaction. The resistance to H 2 O and CO 2 is related to BET surface area, the crystallite sizes of CuO and the reduction behavior of catalysts. The Ce4Cu4 and Ce4Cu1 catalysts exhibit the best resistance against H 2 O and CO 2 . {\textcopyright} 2014 Elsevier B.V. All rights reserved.",

keywords = "Active site, Copper-ceria catalysts, Hydrogen, Preferential CO oxidation",

author = "S. Zeng and Y. Wang and Siyuan Ding and J.J.H.B. Sattler and E. Borodina and L. Zhang and B.M. Weckhuysen and H. Su",

year = "2014",

doi = "10.1016/j.jpowsour.2014.01.098",

language = "English",

volume = "256",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

AU - Zeng, S.

AU - Wang, Y.

AU - Ding, Siyuan

AU - Sattler, J.J.H.B.

AU - Borodina, E.

AU - Zhang, L.

AU - Weckhuysen, B.M.

AU - Su, H.

PY - 2014

Y1 - 2014

N2 - A series of CuO/CeO 2 and inverse CeO 2 /CuO catalysts are prepared by the surfactant-templated method and characterized via XRD, HRTEM, H 2 -TPR, SEM, XPS, in situ XRD, in situ UV-Vis and N 2 adsorption-desorption techniques. It is found that there are two kinds of surface sites in the CuO-CeO 2 system, including CuO surface sites for CO chemisorption and CeO 2 surface sites with oxygen vacancies for oxygen sorption. The active sites for CO oxidation are located on the contact interface of two-kind surface sites and the lattice oxygen can make a significant contri bution to the CO-PROX reaction. The resistance to H 2 O and CO 2 is related to BET surface area, the crystallite sizes of CuO and the reduction behavior of catalysts. The Ce4Cu4 and Ce4Cu1 catalysts exhibit the best resistance against H 2 O and CO 2 . © 2014 Elsevier B.V. All rights reserved.

AB - A series of CuO/CeO 2 and inverse CeO 2 /CuO catalysts are prepared by the surfactant-templated method and characterized via XRD, HRTEM, H 2 -TPR, SEM, XPS, in situ XRD, in situ UV-Vis and N 2 adsorption-desorption techniques. It is found that there are two kinds of surface sites in the CuO-CeO 2 system, including CuO surface sites for CO chemisorption and CeO 2 surface sites with oxygen vacancies for oxygen sorption. The active sites for CO oxidation are located on the contact interface of two-kind surface sites and the lattice oxygen can make a significant contri bution to the CO-PROX reaction. The resistance to H 2 O and CO 2 is related to BET surface area, the crystallite sizes of CuO and the reduction behavior of catalysts. The Ce4Cu4 and Ce4Cu1 catalysts exhibit the best resistance against H 2 O and CO 2 . © 2014 Elsevier B.V. All rights reserved.

KW - Active site

KW - Copper-ceria catalysts

KW - Hydrogen

KW - Preferential CO oxidation

U2 - 10.1016/j.jpowsour.2014.01.098

DO - 10.1016/j.jpowsour.2014.01.098

M3 - Article

SN - 0378-7753

VL - 256

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

Active sites over CuO/CeO2 and inverse CeO2/CuO catalysts for preferential CO oxidation

Abstract

Keywords

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