Particle size effect in the low temperature reforming of methane by carbon dioxide on silica-supported Ni nanoparticles

David Baudouin, Uwe Rodemerck, Frank Krumeich, Aimery De Mallmann, Kaï C. Szeto, Hervé Ménard, Laurent Veyre, Jean Pierre Candy, Paul B. Webb, Chloé Thieuleux, Christophe Copéret

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156 Citations (Scopus)

Abstract

The influence of nickel particle size in the range of 1.6-7.3 nm on catalyst performance in low temperature CO2 reforming of methane reaction has been investigated using well-defined catalysts based on a neutral silica support. XAS and XPS studies indicated a reduction degree greater than 90%. The intrinsic Ni/SiO2 performances were found to be independent of nickel particle size in dry reforming at 773 K using a CH4/CO 2 ratio of 1.3 at 1 atm, both at an early stage and in steady state conditions. The H2/CO ratio was also found to be structure in sensitive but is controlled by thermodynamics through the faster reverse water gas shift reaction.

Original languageEnglish
Pages (from-to)27-34
Number of pages8
JournalJournal of Catalysis
Volume297
Early online date30 Oct 2012
DOIs
Publication statusPublished - Jan 2013

Keywords

  • Carbon dioxide reforming of methane
  • Nickel nanoparticles
  • Particle size effect
  • Silica-supported

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    Baudouin, D., Rodemerck, U., Krumeich, F., Mallmann, A. D., Szeto, K. C., Ménard, H., Veyre, L., Candy, J. P., Webb, P. B., Thieuleux, C., & Copéret, C. (2013). Particle size effect in the low temperature reforming of methane by carbon dioxide on silica-supported Ni nanoparticles. Journal of Catalysis, 297, 27-34. https://doi.org/10.1016/j.jcat.2012.09.011