PtRu colloid nanoparticles for CO oxidation in microfabricated reactors

Asbjørn Klerke, Souheil Saadi, Maja Bøg Toftegaard, Anders Theilgaard Madsen, Jane Hvolbæk Nielsen, Søren Jensen, Ole Hansen, Claus H. Christensen, Ulrich Quaade

Research output: Contribution to journalJournal articleResearchpeer-review


The catalytic activity of PtRu colloid nanoparticles for CO oxidation is investigated in microfabricated reactors. The measured catalytic performance describes a volcano curve as a function of the Pt/Ru ratio. The apparent activation energies for the different alloy catalysts are between 21 and 117 kJ/mol, which agree well with literature. The size distribution of the colloid nanoparticles is determined from STM and TEM, from which an average size of the colloid nanoparticles of 2.2 +/- 0.5 nm is determined.
Original languageEnglish
JournalCatalysis Letters
Issue number1-2
Pages (from-to)7-12
Publication statusPublished - 2006


  • CO oxidation
  • Heterogeneous catalysis
  • Nanoparticles
  • Colloids
  • Alloyed nanoparticles
  • Platinum and ruthenium

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