Ceria Catalysts at Nanoscale: How Do Crystal Shapes Shape Catalysis?
University of Udine · Universitat Politècnica de Catalunya
Abstract
Engineering the shape and size of catalyst particles and the interface between different components of heterogeneous catalysts at the nanometer level can radically alter their performances. This is particularly true with CeO2-based catalysts, where the precise control of surface atomic arrangements can modify the reactivity of Ce4+/Ce3+ ions, changing the oxygen release/uptake characteristics of ceria, which, in turn, strongly affects catalytic performance in several reactions like CO, soot, and VOC oxidation, WGS, hydrogenation, acid–base reactions, and so on. Despite the fact that many of these catalysts are polycrystalline with rather ill-defined morphologies, experimental and theoretical studies on…
Citation impact
- FWCI
- 30.50
- Percentile
- 100%
- References
- 189
Authors
2Topics & keywords
- Catalysis
- Reactivity (psychology)
- Faceting
- Materials science
- Crystallite
- Nanoscopic scale
- Nanotechnology
- Nanometre