Fabrication of Carbon Graphite-supported Pt–SiW12O40 Catalysts Effect of the Pt Loading on the Electrooxidation of Cyclohexane

Fabrication of Carbon Graphite-supported Pt–SiW12O40 Catalysts Effect of the Pt Loading on the Electrooxidation of Cyclohexane

M.S.A. Saleh A. Aouissi* A.A. Al-Suhybani A.M. Al-Mayouf

Department of Chemistry, King Saud University, Riyadh-11451, Saudi Arabia

The Hydrogen Energy Research Group, Sustainable Energy Technologies (SET), King Saud University, Saudi Arabi

Corresponding Author Email: 
December 27, 2013
April 04, 2014
April 08, 2014
| Citation

H4SiW12O40 (abbreviated as SiW) and Pt supported on carbon graphite (CG) with different Pt/SiW ratios were prepared and characterized by FTIR, XRD, ICP-OES, polarography, and TEM. The prepared catalysts were then after successfully attached onto glassy carbon electrodes by using polyvinylidene difluoride (PVDF) as binder. The resulting electrocatalysts were characterized by cyclic voltammetry (CV) and tested for the electrooxidation of cyclohexane. It has been found that the addition of SiW to the catalyst increased the dispersion of the Pt particles. The results of the electrocatalytic tests showed that cyclohexanone, cyclohexanol, and cyclohexyl hydroperoxide are formed as major products of the reaction. Higher Pt loadings promoted cyclohexanone production.


Heteropolyanions, carbon graphite, cyclohexane oxidation, modified carbon electrode

1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusion
5. Acknowledgements

The Investigators extend their appreciation to the National Plan for Science and Technology at King Saud University for funding the work through the research group project No 09-NAN863-02


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