The DOI matches its Crossref record; 27 of the 27 references it cites were found in a registry or an index.
Tuning the Structure of Platinum Particles on Ceria In Situ for Enhancing the Catalytic Performance of Exhaust Gas Catalysts
Abstract
A dynamic structural behavior of Pt nanoparticles on the ceria surface under reducing/oxidizing conditions was found at moderate temperatures (<500 °C) and exploited to enhance the catalytic activity of Pt/CeO 2‐based exhaust gas catalysts. Redispersion of platinum in an oxidizing atmosphere already occurred at 400 °C. A protocol with reducing pulses at 250–400 °C was applied in a subsequent step for controlled Pt‐particle formation. Operando X‐ray absorption spectroscopy unraveled the different extent of reduction and sintering of Pt particles: The choice of the reductant allowed the tuning of the reduction degree/particle size and thus the catalytic activity (CO>H 2>C 3 H 6). This dynamic nature of Pt on ceria at such low temperatures (250–500 °C) was additionally confirmed by in situ environmental transmission electron microscopy. A general concept is proposed to adjust the noble metal dispersion (size, structure), for example, during operation of an exhaust gas catalyst.
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van Deelen, T. W., Hernández Mejía, C., & de Jong, K. P. (2019) · Nature Catalysis · doi:10.1038/s41929-019-0364-x · Cited by 2,349
Chemical Synthesis of Single Atomic Site Catalysts
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Structural evolution of atomically dispersed Pt catalysts dictates reactivity
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Dynamic charge and oxidation state of Pt/CeO2 single-atom catalysts
Daelman, N., Capdevila-Cortada, M., & López, N. (2019) · Nature Materials · doi:10.1038/s41563-019-0444-y · Cited by 435
Metadata
- Authors
- Gänzler, A. M., Casapu, M., Vernoux, P., Loridant, S., Cadete Santos Aires, F. J., Epicier, T., Betz, B., Hoyer, R., & Grunwaldt, J.
- Venue
- Angewandte Chemie International Edition
- Publisher
- Wiley
- Published
- 2017-09-18
- Volume
- 56
- Issue
- 42
- Pages
- 13078-13082
- ISSN
- 1433-7851 (ISSN-L)
- 1521-3773
- OpenAlex
- W2744176516
- Cited by
- 283
- References
- 27
- FWCI
- 9.48
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gänzler, A. M., Casapu, M., Vernoux, P., Loridant, S., Cadete Santos Aires, F. J., Epicier, T., Betz, B., Hoyer, R., & Grunwaldt, J. (2017). Tuning the Structure of Platinum Particles on Ceria In Situ for Enhancing the Catalytic Performance of Exhaust Gas Catalysts. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.201707842
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