Pt supported TiO2 nanofibers and TiO2 nanopowder as catalysts for glycerol oxidation
Novel TiO2 nanofiber supported platinum catalysts Pt/NF TiO2 were synthesized and compared with TiO2 nanopowder supported catalysts Pt/NP TiO2 in selective glycerol oxidation. It was found that Pt/NF TiO2 and Pt/NP TiO2 composites are catalytically active in alkaline glycerol solutions; glyceric acid is obtained as the main product of reaction. Catalyst activity and selectivity dependency on NaOH initial concentration, oxygen pressure and n(glycerol)/n(Pt) ratio were studied. Selectivity to glyceric acid of 63 with full glycerol conversion and selectivity of 68 with 95 glycerol conversion is obtained correspondingly over Pt/NF TiO2 and Pt/NP TiO2 catalysts.
Reaction Kinetics, Mechanisms and Catalysis