Development of ternary and quaternary catalysts for the electrooxidation of glycerol

ScientificWorldJournal. 2012;2012:502083. doi: 10.1100/2012/502083. Epub 2012 May 1.

Abstract

This work consisted in the preparation of platinum-based catalysts supported on carbon (Vulcan XC-72) and investigation of their physicochemical and electrochemical properties. Catalysts of the C/Pt-Ni-Sn-Me (Me = Ru or Ir) type were prepared by the Pechini method at temperature of 350°C. Four different compositions were homemade: C/Pt(60)Sn(10)Ni(30), C/Pt(60)Sn(10)Ni(20)Ru(10), C/Pt(60)Sn(10)Ni(10)Ru(20), and C/Pt(60)Sn(10)Ni(10)Ir(20). These catalysts were electrochemically and physically characterized by cyclic voltammetry (CV), chronoamperometry (CA) in the presence of glycerol 1.0 mol dm(-3), X-ray diffraction (XRD), and high-resolution transmission electron microscopy (HRTEM). XRD results showed the main peaks of face-centered cubic Pt. The particle sizes obtained from XRD and HRTEM experiments were close to values ranging from 3 to 8.5 nm. The CV results indicate behavior typical of Pt-based catalysts in acid medium. The CV and CA data reveal that quaternary catalysts present the highest current density for the electrooxidation of glycerol.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbon / chemistry
  • Catalysis
  • Electrochemistry / methods*
  • Glycerol / chemistry*
  • Microscopy, Electron, Transmission
  • Nanotechnology / methods
  • Oxidation-Reduction
  • Particle Size
  • Platinum / chemistry
  • X-Ray Diffraction

Substances

  • Platinum
  • Carbon
  • Glycerol