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Performance of cobalt catalysts supported on CexZr1−xO2 (0 < x < 1) solid solutions in oxidative ethanol reforming

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Abstract

Catalysts containing 10 %Co supported on CexZr1−xO2 (0 < x < 1) were used to catalyze oxidative ethanol reforming reactions. The catalysts were characterized by temperature-programmed reduction, X-ray diffraction and N2 physisorption. Catalytic tests were conducted at 773 K and molar feed ratios of H2O/Ethanol/O2 = 3/1/0.16 and 3/1/0.20. The mixed oxide provides enhanced resistance to carbon formation because the insertion of Zr4+ causes a distortion in the CeO2 lattice, leading to a higher fraction of cerium species on the surface and favoring the oxidation and gasification reactions of carbon and CO. The addition of oxygen improved the oxidative properties of the reactive systems, with a high formation of CO2.

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Acknowledgments

The authors acknowledge Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPQ) and Ministério da Ciência e Tecnologia (MCT) for financial assistance.

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Authors and Affiliations

  1. Instituto de Química de São Carlos, Universidade de São Paulo, Avenida Trabalhador Sãocarlense, 400, São Carlos, SP, Brazil

    Thaisa A. Maia & Elisabete M. Assaf

  2. Departamento de Engenharia Química, Universidade Federal de São Carlos, Rod, W. Luiz, km. 235, São Carlos, SP, Brazil

    José M. Assaf

Authors
  1. Thaisa A. Maia
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  2. José M. Assaf
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  3. Elisabete M. Assaf
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Correspondence to Elisabete M. Assaf.

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Maia, T.A., Assaf, J.M. & Assaf, E.M. Performance of cobalt catalysts supported on CexZr1−xO2 (0 < x < 1) solid solutions in oxidative ethanol reforming. Reac Kinet Mech Cat 109, 181–197 (2013). https://doi.org/10.1007/s11144-013-0548-3

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