Carbon black and propylene oxidation over Ru/CexZr 1-xO2 catalysts

Doris Homsi, Samer Aouad, John El Nakat, Bilal El Khoury, Pierre Obeid, Edmond Abi-Aad, Antoine Aboukaïs

Research output: Contribution to journalArticlepeer-review


The effect of addition of ruthenium to different CexZr 1-xO2 (0 ≤ x ≤ 1) supports on the oxidation of propylene and carbon black (CB) was investigated. The results showed that different reactive ruthenium oxide species are formed following calcination at 600 °C. The reactivity increases with the cerium content in the support, Ru/CeO2 being the most reactive catalyst. However, the Ce 0.5Zr0.5O2 support and corresponding catalyst, Ru/Ce0.5Zr0.5O2, exhibited decreased reactivities comparing to solids with lower cerium content. This was ascribed to the formation of a solid structure that inhibits the interaction between cerium and ruthenium oxide species following impregnation.

Original languageEnglish (US)
Pages (from-to)776-780
Number of pages5
JournalCatalysis Communications
Issue number8
StatePublished - Mar 31 2011


  • Carbon black
  • Catalyst
  • Cerium
  • Oxidation
  • Propylene
  • Ruthenium
  • Zirconium

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Process Chemistry and Technology


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