Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study

Journal article


Publication Details

Author(s): Kaftan A, Kollhoff F, Thanh-Son Nguyen , Piccolo L, Laurina M, Libuda J
Journal: Catalysis: Science and Technology
Publisher: ROYAL SOC CHEMISTRY
Publication year: 2016
Volume: 6
Journal issue: 3
Pages range: 818-828
ISSN: 2044-4753


Abstract

The oxidation of carbon monoxide has been studied on pristine CeO2, Rh-CeO2, and Pt-CeO2 powders prepared in one step by solution combustion synthesis (SCS). The reaction was cycled between an oxygenrich and a CO-rich feed with regard to the stoichiometric conditions. CO2 production was monitored by mass spectrometry, while the surface species were probed by operando DRIFTS (Diffuse Reflectance Infrared Fourier Transform Spectroscopy). Whereas the reaction starts above 150 degrees C on CeO2 and Rh-CeO2 and does not depend on the state of the surface (oxidized or reduced), the reaction on Pt-CeO2 shows strong dependency on the initial state and substantial activity is achieved at much lower temperatures with the CO-rich feed. We relate this result to the change in the oxidation state of Pt via strong interaction with ceria.


FAU Authors / FAU Editors

Kaftan, Andre
Lehrstuhl für Physikalische Chemie II
Kollhoff, Fabian
Lehrstuhl für Physikalische Chemie II
Libuda, Jörg Prof. Dr.
Professur für Physikalische Chemie


Additional Organisation
Exzellenz-Cluster Engineering of Advanced Materials


External institutions with authors

National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)


Research Fields

D Catalytic Materials
Exzellenz-Cluster Engineering of Advanced Materials


How to cite

APA:
Kaftan, A., Kollhoff, F., Thanh-Son Nguyen, ., Piccolo, L., Laurina, M., & Libuda, J. (2016). Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study. Catalysis: Science and Technology, 6(3), 818-828. https://dx.doi.org/10.1039/c5cy00827a

MLA:
Kaftan, Andre, et al. "Sensitivity of CO oxidation toward metal oxidation state in ceria-supported catalysts: an operando DRIFTS-MS study." Catalysis: Science and Technology 6.3 (2016): 818-828.

BibTeX: 

Last updated on 2019-27-02 at 14:23