Lattice oxygen of La1−xSrxMO3 (M = Mn,Ni) and LaMnO3−αFβ perovskite oxides for the partial oxidation of methane to synthesis gas |
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| Affiliation: | 1. Department of Chemistry, Center for Surface Analysis and Research, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China;2. The Key Laboratory of Mesoscopic Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China;1. Chemical Process Intensification, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, Helix Building, 5612 AZ Eindhoven, The Netherlands;2. Instituto de Catálisis y Petroleoquímica (CSIC), C/Marie Curie s/n. Cantoblanco, 28049 Madrid, Spain;1. Istituto per l’Energetica e le Interfasi IENI – CNR, Corso Stati Uniti 4, 35127 Padova, Italy;2. Istituto di Ricerche sulla Combustione IRC – CNR, P.le V. Tecchio 80, 80125 Napoli, Italy;1. A. A. Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, 119334 Moscow, Russian Federation;2. I. M. Gubkin Russian State University of Oil and Gas (National Research University), 119991 Moscow, Russian Federation;1. Department of Chemical Engineering of Polytechnic School, University of São Paulo, São Paulo, SP, Brazil;2. Post Graduate Program in Mechanical Engineering, Santa Cecília University, Santos, SP, Brazil;3. Federal University of Rio de Janeiro, Chemical Engineering Program, NUCAT/PEQ/COPPE, Bl. G 128, C. P. 68502, CEP 21941-914, Rio de Janeiro, RJ, Brazil;1. Federal University of Rio Grande do Norte, Institute of Chemistry, PO BOX 1662, Natal, RN, 59078-970 Brazil;2. Federal University of Pernambuco, Department of Mechanical Engineering, Recife, PE, 50070-901 Brazil;3. Center for Gas Technology and Renewable Energy – CTGAS-ER, Av. Capitão-Mor Gouveia, 1480, Lagoa Nova, Natal, RN, 59063-40 Brazil;1. Universidade Federal da Bahia, Instituto de Química, Rua Barão de Jeremoabo, 147, Zip Code 40170-115, Salvador, BA, Brazil;2. The Brazilian Synchrotron Light Laboratory, Zip Code 13083-100, Campinas, SP, Brazil;3. Universidade Federal da Bahia, Escola Politécnica - PPEQ, Rua Aristídes Novis, 2, Zip Code 40210-630, Salvador, BA, Brazil;4. Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Zip Code 13083-970, Campinas, SP, Brazil |
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| Abstract: | The partial oxidation of methane to synthesis gas by using the lattice oxygen of La1−xSrxMO3 (M = Mn, Ni; x = 0–0.4) and LaMnO3−αFβ (β/(3 − α) = 0.1) perovskite oxides was explored. Approximately 75% CO selectivity at 16% CH4 conversion with H2/CO molar ratio of ca. 2.5 can be achieved at 800 °C. The stability of the perovskite structure and the reactivity/selectivity of lattice oxygen are found to be dependent on (i) B-site element, (ii) degree of substitution of La with Sr, and (iii) fluorination of the perovskite oxide. |
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