The Direct Synthesis of Hydrogen Peroxide Using Platinum‐Promoted Gold–Palladium Catalysts |
| |
| Authors: | Dr Jennifer K Edwards James Pritchard Li Lu Marco Piccinini Greg Shaw Dr Albert F Carley David J Morgan Prof Christopher J Kiely Prof Graham J Hutchings |
| |
| Institution: | 1. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT (UK);2. Department of Materials Science and Engineering, Lehigh University, 5 East Packer Ave, Bethlehem, PA 18015 (USA) |
| |
| Abstract: | The direct synthesis of hydrogen peroxide offers a potentially green route to the production of this important commodity chemical. Early studies showed that Pd is a suitable catalyst, but recent work indicated that the addition of Au enhances the activity and selectivity significantly. The addition of a third metal using impregnation as a facile preparation method was thus investigated. The addition of a small amount of Pt to a CeO2‐supported AuPd (weight ratio of 1:1) catalyst significantly enhanced the activity in the direct synthesis of H2O2 and decreased the non‐desired over‐hydrogenation and decomposition reactions. The addition of Pt to the AuPd nanoparticles influenced the surface composition, thus leading to the marked effects that were observed on the catalytic formation of hydrogen peroxide. In addition, an experimental approach that can help to identify the optimal nominal ternary alloy compositions for this reaction is demonstrated. |
| |
| Keywords: | alloys hydrogenation hydrogen peroxide nanoparticles supported catalysts |
|
|
