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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

Research output: Contribution to journalArticlepeer-review

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

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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