High catalytic activity in CO PROX reaction of low cobalt-oxide loading catalysts supported on nano-particulate CeO2–ZrO2 oxides |
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| Affiliation: | 1. State Key Laboratory of Fine Chemicals, Department of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China;2. Department of Catalytic Chemistry and Engineering, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China;1. Laboratoire d’Application de la Chimie aux Ressources et Substances Naturelles et à l’Environnement, Faculté des Sciences de Bizerte, Université de Carthage, 7021 Zarzouna, Bizerte, Tunisia;2. Instituto de Catálisis y Petroleoquímica, CSIC, Campus de Cantoblanco, C/Marie Curie 2, 28049 Madrid, Spain;1. Normandie Univ, ENSICAEN, UNICAEN, CNRS,LCS, 14000 Caen, France;2. CIMAP, CEA, UMR CNRS 6252, ENSICAEN, Normandie Université, France;3. V. Lashkaryov Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine, 45 Pr. Nauky, Kiev 03028, Ukraine;4. National University of Kyiv-Mohyla Academy, 2 Skovorody str., Kiev 04070, Ukraine;1. Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) – Pilani, Hyderabad Campus, Hyderabad, 50078, India;2. Department of Chemical Engineering, Indian Institute of Science, Bangalore, 500012, India;1. Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes, 748, Cidade Universitária, 05508-000, São Paulo, SP, Brazil;2. Instituto de Pesquisas Energéticas e Nucleares – IPEN-CNEN/SP, Av. Prof. Lineu Prestes, 2242, Cidade Universitária, 05508-900 São Paulo, SP, Brazil;3. Instituto de Química da Universidade Federal Fluminense, Grupo de Eletroquímica e Materiais Nanoestruturados, Campus Valonguinho, Niterói, RJ CEP, 24020-141, Brazil;4. Department of Chemistry, University of Helsinki, A.I. Virtasen Aukio 1, Helsinki, Finland |
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| Abstract: | Co3O4/NP-ZrO2, Co3O4/NP-CeO2 and Co3O4/NP-Ce0.8Zr0.2O2 catalysts were prepared via a reverse microemulsion/incipient wetness impregnation (RM–IWI) method. The catalytic properties for CO preferential oxidation (CO PROX) reaction in H2-rich stream were investigated. The Co3O4/NP-Ce0.8Zr0.2O2 catalyst with 1.8 wt.% Co3O4 loading has exhibited higher catalytic activity than that of the other two catalysts. The higher catalytic activity might be attributed to the combination effect of the highly dispersed cobalt oxide, the improvement in CeO2 reducibility due to ZrO2 incorporation in CeO2 structures, and the strong cobalt oxide-support interaction. |
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