Journal
CATALYSIS LETTERS
Volume 129, Issue 3-4, Pages 394-399Publisher
SPRINGER
DOI: 10.1007/s10562-009-9845-x
Keywords
CeO2; Ru/CeO2; CeO2 nanoparticles; Oxidation; Benzyl alcohol; Solvothermal method
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Ceria colloidal particles with a mean crystallite size of 2 nm were synthesized by a solvothermal reaction. The Ru/CeO2 catalyst prepared from the CeO2 colloids exhibited higher activity than the catalyst prepared from Ce(NO3)(3). Temperature-programmed reduction analysis indicated that the reduction of surface Ce4+ was accelerated by highly dispersed Ru species on the CeO2 particles and occurred at low temperatures. The single component CeO2 sample prepared by the coagulation of the CeO2 colloid was more easily reduced and re-oxidized than the CeO2 sample prepared by the precipitation method from Ce(NO3)(3). The higher activity of Ru/CeO2 prepared from the CeO2 colloids came from the inherent nature of the CeO2 support itself.
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