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- W3040893352 endingPage "117732" @default.
- W3040893352 startingPage "117732" @default.
- W3040893352 abstract "• Physical-chemical properties of C@P/H-x were notably affected by thermal treatment. • C@P/H was prone to aggregation and sintering due to low thermal resistance. • Optimal structure and high particle dispersion were P@C/H calcined at 800 °C. • P@C/H-800 exhibited superior redox ability for decreasing light-off temperature. In this study, two types of core@shell nanoparticles, CeO 2 @Pd and inverse Pd@CeO 2 nanoparticles, were synthesized by sequential deposition and electrostatic attraction-induced deposition method, respectively. Then, the core@shell nanoparticles supported on halloysite were thermally treated at different temperatures, and the nascent core@shell/H-x catalysts were characterized and evaluated for their three-way catalytic performance. During the thermal treatment (650 °C, 800 °C, and 1100 °C), the CeO 2 @Pd/H-x catalysts showed strong temperature sensitivity, resulting in aggregation of the active metal particles, degradation of the textural properties, and weak interactions between the active sites and support, accompanied by the deactivation of the three-way reaction. Remarkably, Pd@CeO 2 /H-800 exhibits excellent catalytic performance because it has an appropriate Pd-CeO 2 interaction and high thermal stability, which effectively suppresses the encapsulation and aggregation of Pd@CeO 2 nanoparticles and imparts a high content of Ce 3+ species and oxygen vacancies and equivalent of Pd 2+ /Pd° ratio." @default.
- W3040893352 created "2020-07-16" @default.
- W3040893352 creator A5050489512 @default.
- W3040893352 creator A5050605111 @default.
- W3040893352 date "2020-07-01" @default.
- W3040893352 modified "2023-09-24" @default.
- W3040893352 title "Design of a thermally resistant core@shell/halloysite catalyst with optimized structure and surface properties for a Pd-only three-way catalyst" @default.
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- W3040893352 doi "https://doi.org/10.1016/j.apcata.2020.117732" @default.
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