title: Base-free oxidation of glycerol using titania-supported trimetallic Au–Pd–Pt nanoparticles.
abstract: Base-free selective oxidation of glycerol has been investigated using trimetallic Au–Pd–Pt nanoparticles supported on titania and their corresponding bimetallic catalysts. Catalysts were prepared by the sol-immobilization method and characterized by means of TEM, UV/Vis spectroscopy, diffuse reflectance infrared fourier transform spectroscopy, X-ray photoelectron spectroscopy, and microwave plasma–atomic emission spectroscopy. It was found that of the bimetallic catalysts, Pd–Pt/TiO2 was the most active with high selectivity to C3 products. The addition of Au to this catalyst to form the trimetallic Au–Pd–Pt/TiO2, resulted in an increase in activity relative to Pd–Pt/TiO2. The turnover frequency increased from 210 h(−1) with the Pd–Pt/TiO2 catalyst to378 h(−1) for the trimetallic Au–Pd–Pt/TiO2 catalyst with retention of selectivity towards C3 products.
authors: Simon A
authors: SA
authors: Kondrat
authors: Peter J
authors: PJ
authors: Miedziak
authors: Mark
authors: M
authors: Douthwaite
authors: Gemma L
authors: GL
authors: Brett
authors: Thomas E
authors: TE
authors: Davies
authors: David J
authors: DJ
authors: Morgan
authors: Jennifer K
authors: JK
authors: Edwards
authors: David W
authors: DW
authors: Knight
authors: Christopher J
authors: CJ
authors: Kiely
authors: Stuart H
authors: SH
authors: Taylor
authors: Graham J
authors: GJ
authors: Hutchings
mesh_terms: D056804:Biofuels; D002384:Catalysis; D055664:Electrochemical Techniques; D005990:Glycerol / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D010084:Oxidation-Reduction; D010165:Palladium / Q000737:chemistry*; D056951:Photoelectron Spectroscopy; D010984:Platinum / Q000737:chemistry*; D013054:Spectrophotometry, Atomic; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D056804:Biofuels; C009495:titanium dioxide; D010984:Platinum; D010165:Palladium; D006046:Gold; D014025:Titanium; D005990:Glycerol