Análisis mediante HRTEM de nanopartículas de Ni soportadas sobre CaO-SiO₂ en el reformado seco de metano

  1. M. Camino Majarres 1
  2. S. R. G. Carrazán 1
  3. B. Faroldi 3
  4. J. Múnera 3
  5. L. M. Cornaglia 3
  6. E. Gallegos 2
  7. I. Rodríguez Ramos 2
  1. 1 Departamento de Química Inorgánica/Facultad de Ciencias Químicas/Universidad de Salamanca, España
  2. 2 Grupo de Diseño Molecular de Catalizadores Heterogéneos/Instituto de Petroleoquímica/ CSIC, Madrid, España
  3. 3 Instituto de Investigaciones en Catálisis y Petroquímica (FIQUNL-CONICET/Facultad de Ingeniería Química/Universidad del Litoral, Santa Fe, Argentina
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Proceedings:
XXVI Congresso Ibero-Americano de Catálise (CICAT 2018)

Publisher: Sociedade Portuguesa de Química

ISBN: 9789812704658

Year of publication: 2018

Pages: 1819-1823

Congress: XXVI Congresso Ibero-Americano de Catálise, CICat 2018, em Coimbra, Portugal, entre 9 e 14 de setembro de 2018

Type: Conference Poster

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Abstract

In this work, the stability, dispersion and particle size of Ni nanoparticles supported in CaO (27)-SiO2 after 24 hours of reaction in dry methane reforming (DRM) is analyzed by HRTEM. The distribution of the Ni particles in the support is very irregular, both in the solids pretreated in hydrogen atmosphere and in those used in the DRM reaction, this means that, there are areas with very little Ni content, in both, reduced and used catalysts and some areas with a high concentration of Ni particles. The formation of a large amount of carbon fibers is also detected in the used catalysts.