Pulse studies to decipher the role of surface morphology in CuO/CeO₂ nanocatalysts for the water gas shift reaction
Abstract
The water-gas shift reaction (WGS, CO + H₂O → CO₂) was studied over CuO/CeO₂ catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO₂ (ns) exhibited a substantially better activity than CuO/CeO₂ (nc). The higher activity was associated with the unique properties of CuO/CeO₂ (ns), such as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³⁺ in CeO₂ (ns).
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- South-Central Univ. for Nationalities, Wuhan, Hubei (China); Brookhaven National Lab., Upton, NY (United States)
- Inst. de Catalisis y Petroleoquimica, Consejo Superior de Investigaciones Cientificas, Madrid (Spain)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1183269
- Report Number(s):
- BNL-107702-2015-JA
Journal ID: ISSN 1011-372X; R&D Project: CO-027; KC0302010
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Catalysis Letters
- Additional Journal Information:
- Journal Volume: 145; Journal Issue: 3; Journal ID: ISSN 1011-372X
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; national synchrotron light source; CuO/CeO₂; nanospheres; nanocubes; water-gas; shift reaction; transient studies
Citation Formats
Rodriguez, Jose A., Zhao, Fuzhen, Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Si, Rui, Johnston-Peck, Aaron C., Martinez-Arias, Arturo, Hanson, Jonathan C., and Senanayake, Sanjaya D. Pulse studies to decipher the role of surface morphology in CuO/CeO₂ nanocatalysts for the water gas shift reaction. United States: N. p., 2015.
Web. doi:10.1007/s10562-015-1482-y.
Rodriguez, Jose A., Zhao, Fuzhen, Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Si, Rui, Johnston-Peck, Aaron C., Martinez-Arias, Arturo, Hanson, Jonathan C., & Senanayake, Sanjaya D. Pulse studies to decipher the role of surface morphology in CuO/CeO₂ nanocatalysts for the water gas shift reaction. United States. https://doi.org/10.1007/s10562-015-1482-y
Rodriguez, Jose A., Zhao, Fuzhen, Liu, Zongyuan, Xu, Wenqian, Yao, Siyu, Si, Rui, Johnston-Peck, Aaron C., Martinez-Arias, Arturo, Hanson, Jonathan C., and Senanayake, Sanjaya D. Fri .
"Pulse studies to decipher the role of surface morphology in CuO/CeO₂ nanocatalysts for the water gas shift reaction". United States. https://doi.org/10.1007/s10562-015-1482-y. https://www.osti.gov/servlets/purl/1183269.
@article{osti_1183269,
title = {Pulse studies to decipher the role of surface morphology in CuO/CeO₂ nanocatalysts for the water gas shift reaction},
author = {Rodriguez, Jose A. and Zhao, Fuzhen and Liu, Zongyuan and Xu, Wenqian and Yao, Siyu and Si, Rui and Johnston-Peck, Aaron C. and Martinez-Arias, Arturo and Hanson, Jonathan C. and Senanayake, Sanjaya D.},
abstractNote = {The water-gas shift reaction (WGS, CO + H₂O → CO₂) was studied over CuO/CeO₂ catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO₂ (ns) exhibited a substantially better activity than CuO/CeO₂ (nc). The higher activity was associated with the unique properties of CuO/CeO₂ (ns), such as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³⁺ in CeO₂ (ns).},
doi = {10.1007/s10562-015-1482-y},
journal = {Catalysis Letters},
number = 3,
volume = 145,
place = {United States},
year = {Fri Jan 23 00:00:00 EST 2015},
month = {Fri Jan 23 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Shape Engineering of Oxide Nanoparticles for Heterogeneous Catalysis
journal, April 2016
- Zhou, Yan; Li, Yong; Shen, Wenjie
- Chemistry - An Asian Journal, Vol. 11, Issue 10