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, Kai C. Szeto, Herve Menard, Laurent Veyre, Jean-Pierre Candy, Paul B. Webb, Chloe Thieuleux, Christophe Coperet*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

177 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/CO2 ratio of 1.3 at 1 atm, both at an early stage and in steady state conditions. The H-2/CO ratio was also found to be structure in sensitive but is controlled by thermodynamics through the faster reverse water gas shift reaction. (c) 2012 Elsevier Inc. All rights reserved.

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

Keywords

  • Nickel nanoparticles
  • Silica-supported
  • Carbon dioxide reforming of methane
  • Particle size effect
  • SYNTHESIS GAS
  • CHEMICAL CONVERSION
  • CATALYSTS
  • NICKEL
  • OXIDE
  • CO2
  • CHEMISORPTION
  • REQUIREMENTS
  • ACTIVATION
  • ADSORPTION

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