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Catalysts 2016, 6(8), 124; doi:10.3390/catal6080124

Effect of Surface Copper Species on NO + CO Reaction over xCuO-Ce0.9Zr0.1O2 Catalysts: In Situ DRIFTS Studies

1
Key Laboratory of Functional Inorganic Material Chemistry (Heilongjiang University), Ministry of Education; School of Chemistry and Materials, Heilongjiang University, Harbin 150080, China
2
College of Environmental and Chemical Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Juan J. Bravo-Suarez
Received: 17 May 2016 / Revised: 31 July 2016 / Accepted: 4 August 2016 / Published: 12 August 2016
(This article belongs to the Special Issue In Situ and Operando Characterization in Catalysis)
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Abstract

In this work, the activity of xCuO-Ce0.9Zr0.1O2 catalysts for the reaction of NO + CO was investigated. Especially, in situ DRIFTS was applied to investigate the surface species under the adsorption of NO and/or CO and the reaction of NO and CO to understand the key intermediates species and reaction process of NO + CO. The results suggest that the copper oxide species are well dispersed on the surface of the catalysts, which can be easily reduced to form Cu+ species. The Cu+ species are proposed to be important activity species. The results of this work also suggest that N2O22− is likely an intermediate species that plays an important role in NO reduction by CO. Thus, more Cu+ and highly dispersed copper oxide species are expected to be beneficial for the reaction of CO + NO over the xCuO-Ce0.9Zr0.1O2 catalysts. View Full-Text
Keywords: xCuO-Ce0.9Zr0.1O2 catalysts; CO + NO reaction; Cu+ active species; in situ DRIFTS; highly dispersed CuO xCuO-Ce0.9Zr0.1O2 catalysts; CO + NO reaction; Cu+ active species; in situ DRIFTS; highly dispersed CuO
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, P.; Feng, L.; Yuan, F.; Wang, D.; Dong, Y.; Niu, X.; Zhu, Y. Effect of Surface Copper Species on NO + CO Reaction over xCuO-Ce0.9Zr0.1O2 Catalysts: In Situ DRIFTS Studies. Catalysts 2016, 6, 124.

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