Alumina supported nano-platinum on copper nanoparticles prepared via galvanic displacement reaction for preferential carbon monoxide oxidation in presence of hydrogen |
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| Affiliation: | 1. Energy and Resource Management Division, CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440 020, India;2. Academy of Scientific and Innovative Research (AcSIR), CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440 020, India;1. Department of Chemical Engineering & Technology, IIT (BHU), Varanasi, 221005, India;2. Department of Chemical Engineering, Harcourt Butler Technical University, Kanpur, 208002, India;3. Department of Environmental Science, Banaras Hindu University, Varanasi, 221005, India;1. Hubei Key Laboratory of Advanced Technology for Automotive Components, Wuhan University of Technology, Wuhan, 430070, China;2. Hubei Collaborative Innovation Center for Automotive Components Technology, Wuhan, 430070, China;3. Hubei University of Arts and Science, Xiangyang, 441053, China;4. Key Lab of Colloid and Interface Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China;1. Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China;2. College of Chemistry and Chemical Engineering, Xi''an Shiyou University, Xi''an, 710065, China;1. Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials, School of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, China;2. School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China;1. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain;2. Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca'' Foscari Venezia, Via Torino 155/b, 30172 Mestre-Venezia, Italy;3. Departamento de Química Inorgánica, Universidad de La Laguna, La Laguna, Spain |
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| Abstract: | Improved catalytic centres with a minimum mass-loading of expensive platinum (Pt) have been anticipated for various catalytic applications, for instance preferential oxidation (PROX) of carbon monoxide (CO) in the presence of Hydrogen. Here, we report the synthesis of nano-Pt on the surface of copper (Cu) nanoparticles (NPs) supported on γ-Al2O3 (Ptn(Cu)/γ-Al2O3) via galvanic displacement reaction (GDR) for the catalytic CO-PROX reaction. Ptn(Cu)/γ-Al2O3 showed much improved CO-PROX performance compared to that of the as-synthesized Ptl(Cu)/γ-Al2O3 catalyst. Importantly, no significant conversion of hydrogen at a lower temperature range (<200 °C) is observed during the CO-PROX reaction which is one of the essential prerequisites for the CO-PROX reaction. Moreover, Ptn(Cu)/γ-Al2O3 showed the durable, long-term catalytic CO-PROX performance for 120 h. These results infer that realization of nano-Pt on the surface of the Cu NPs holds the promise as the catalytic centres with the minimum mass-loading of Pt for the CO-PROX reaction. |
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| Keywords: | Nano-platinum Galvanic reaction Carbon monoxide Hydrogen Oxidation |
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