Preformed Pt Nanoparticles Supported on Nanoshaped CeO2 for Total Propane Oxidation
Source abstract
Abstract
High Resolution Image Download MS PowerPoint Slide Pt-based catalysts have been widely used for the removal of short-chain volatile organic compounds (VOCs), such as propane. In this study, we synthesized Pt nanoparticles with a size of ca. 2.4 nm and loaded them on various fine-shaped CeO 2 with different facets to investigate the effect of CeO 2 morphology on the complete oxidation of propane. The Pt/CeO 2 -o catalyst with {111} facets exhibited superior catalytic activity compared to the Pt/CeO 2 -r catalyst with {110} and {100} facets. Specifically, the turnover frequency (TOF) value of Pt/CeO 2 -o was 1.8 times higher than that of Pt/CeO 2 -r. Moreover, Pt/CeO 2 -o showed outstanding long-term stability during 50 h. X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) revealed that the excellent performance of Pt/CeO 2 -o is due to the prevalence of metallic Pt species, which promotes C–C bond cleavage and facilitates the rapid removal of surface formate species. In contrast, a stronger metal–support interaction in Pt/CeO 2 -r leads to easier oxidation of Pt species and the accumulation of intermediates, which is detrimental to the catalytic activity. Our work provides insight into the oxidation of propane on different nanoshaped Pt/CeO 2 catalysts.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Catalysis and Hydrodesulfurization Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory for Advanced and Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
Institute of Energy Technologies, Department of Chemical Engineering and Barcelona Research Center in Multiscale Science and Engineering, EEBE, Universitat Politècnica de Catalunya, Eduard Maristany 10-14, 08019 Barcelona, Spain
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China
Funding
National Key Research and Development Program of China · Ministerio de Ciencia e Innovación · Shanghai Municipal Education Commission · Generalitat de Catalunya · China Scholarship Council · Fundamental Research Funds for the Central Universities · National Natural Science Foundation of China · Shanghai Rising-Star Program
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