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Synthesis and Characterization of Perovskite-Type Oxides La1−xMxCoO3 (M = Ce, Sr) for the Selective CO Oxidation (SELOX)

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Abstract

Perovskite-type oxides La1−xMxCoO3 (M = Ce, Sr) were prepared by citrate method, characterized and evaluated in the selective CO oxidation (SELOX-CO). The insertion of low Cerium or Strontium content generated solids with a single phase related LaCoO3 perovskite. For higher contents we observed segregation of CeO2 and SrCO3. The iso-structural substitution favors the formation of vacancies. The SELOX-CO showed 100 % CO conversion at 200 °C. Higher temperatures favored hydrogen oxidation and methanation.

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Acknowledgments

CNPq (R.M.) for the scholarship and CAPES, FINEP, MCT for the financial support.

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  1. Robert Newton S. H. Magalhães

    Present address: GPIQ/Coordenação de Química-Instituto Federal de Educação, Ciência e Tecnologia da Bahia, Rua Emídio dos Santos, s/n, Barbalho, Salvador, BA, CEP 40301-015, Brazil

Authors and Affiliations

  1. Centro de Tecnologia, NUCAT/PEQ/COPPE-Universidade Federal do Rio de Janeiro, Bloco G, sala 128, Rio de Janeiro, RJ, CEP 21945-970, Brazil

    Martin Schmal & Carlos A. C. Perez

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  1. Martin Schmal
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  2. Carlos A. C. Perez
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  3. Robert Newton S. H. Magalhães
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Correspondence to Martin Schmal.

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Schmal, M., Perez, C.A.C. & Magalhães, R.N.S.H. Synthesis and Characterization of Perovskite-Type Oxides La1−xMxCoO3 (M = Ce, Sr) for the Selective CO Oxidation (SELOX). Top Catal 57, 1103–1111 (2014). https://doi.org/10.1007/s11244-014-0275-7

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