Surface reactivity of LaCoO3 and Ru/LaCoO3 towards CO, CO2 and C3H8: Effect of H2 and O2 pretreatments

▶ Ru promotes “carbon” suppression in propane TPSR on Ru/LaCoO3. ▶ Ru promotes syngas production during OSR of propane on Ru/LaCoO3 by enhancing the presence of Co0. ▶ Ru reduces the strength of basic sites in Ru/LaCoO3 compared to LaCoO3. ▶ Hydrogen compared to oxygen pretreatment of LaCoO3 or Ru/LaCoO3 enhances CO2 chemisortion and “carbon” deposits.