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In Situ Characterization of Cu/CeO2 Nanocatalysts for CO2 Hydrogenation: Morphological Effects of Nanostructured Ceria on the Catalytic Activity
Open accessAbstract
A combination of time-resolved X-ray diffraction (TR-XRD), ambient-pressure X-ray photoelectron spectroscopy (AP-XPS), and diffuse reflectance infrared Fourier transform spectroscopy was used to carry out in situ characterization of Cu/CeO 2 nanocatalysts during the hydrogenation of CO 2 . Morphological effects of the ceria supports on the catalytic performances were investigated by examining the behavior of copper/ceria nanorods (NR) and nanospheres. At atmospheric pressures, the hydrogenation of CO 2 on the copper/ceria catalysts produced mainly CO through the reverse water–gas shift (RWGS) reaction and a negligible amount of methanol. The Cu/CeO 2 -NR catalyst displayed the higher activity, which demonstrates that the RWGS is a structure-sensitive reaction. In situ TR-XRD and AP-XPS characterization showed significant changes in the chemical state of the catalysts under reaction conditions, with the copper being fully reduced and a partial Ce 4+ → Ce 3+ transformation occurring. A more effective CO 2 dissociative activation at high temperature and a preferential formation of active bidentate carbonate and formate intermediates over CeO 2 (110) terminations are probably the main reasons for the better performance of the Cu/CeO 2 -NR catalyst in the RWGS reaction.
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Cites
Recent advances in catalytic hydrogenation of carbon dioxide
Wang, W., Wang, S., Ma, X., & Gong, J. (2011) · Chemical Society Reviews · doi:10.1039/c1cs15008a · Cited by 3,316
Cited by
Jiang, F., Wang, S., Liu, B., Liu, J., Wang, L., Xiao, Y., Xu, Y., & Liu, X. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c03324 · Cited by 892
Inverse ZrO2/Cu as a highly efficient methanol synthesis catalyst from CO2 hydrogenation
Wu, C., Lin, L., Liu, J., Zhang, J., Zhang, F., Zhou, T., Rui, N., Yao, S., Deng, Y., Yang, F., et al. (2020) · Nature Communications · doi:10.1038/s41467-020-19634-8 · Cited by 503
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Metadata
- Authors
- Lin, L., Yao, S., Liu, Z., Zhang, F., Li, N., Vovchok, D., Martínez-Arias, A., Castañeda, R., Lin, J., Senanayake, S. D., Su, D., Ma, D., & Rodriguez, J. A.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2018-05-28
- Volume
- 122
- Issue
- 24
- Pages
- 12934-12943
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2804553700
- Cited by
- 233
- References
- 1
- FWCI
- 4.55
- Type
- journal article
- Language
- en
- Open access
- green
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- Lin, L., Yao, S., Liu, Z., Zhang, F., Li, N., Vovchok, D., Martínez-Arias, A., Castañeda, R., Lin, J., Senanayake, S. D., Su, D., Ma, D., & Rodriguez, J. A. (2018). In Situ Characterization of Cu/CeO2 Nanocatalysts for CO2 Hydrogenation: Morphological Effects of Nanostructured Ceria on the Catalytic Activity. The Journal of Physical Chemistry C. https://doi.org/10.1021/acs.jpcc.8b03596
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