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Direct Synthesis of H2O2 from H2 and O2 over Gold, Palladium, and Gold–Palladium Catalysts Supported on Acid-Pretreated TiO2

Authors

  • Jennifer K. Edwards Dr.,

    1. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT (UK)
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  • Edwin Ntainjua N Dr.,

    1. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT (UK)
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  • Albert F. Carley Dr.,

    1. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT (UK)
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  • Andrew A. Herzing Dr.,

    1. Center for Advanced Materials and Nanotechnology, Lehigh University, 5 East Packer Avenue, Bethlehem, PA 18015-3195 (USA)
    2. Current address: National Institute of Standards and Technology, Surface and Microanalysis Science Division, 100 Bureau Drive,stop 8371, Gaithersburg, MD 20899-8371 (USA)
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  • Christopher J. Kiely Prof.,

    1. Center for Advanced Materials and Nanotechnology, Lehigh University, 5 East Packer Avenue, Bethlehem, PA 18015-3195 (USA)
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  • Graham J. Hutchings Prof.

    1. Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, CF10 3AT (UK)
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  • We acknowledge the support of the Engineering and Physical Sciences Research Council (EPSRC) of the UK, Johnson Matthey Plc (project ATHENA), and the European Union (project AURICAT; Contract HPRN-CT-2002-00174). C.J.K. and A.A.H. would like to gratefully acknowledge NSF funding through the following grants: NSF DMR-0079996, NSF DMR-0304738, and NSF-DMR-0320906. A.A.H. would also like to thank the NRC for their support through the postdoctoral associate program.

Abstract

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Palladium-ringed gold: The acid-pretreated Au–Pd catalysts supported on TiO2 have a well-defined gold-rich core (blue) and palladium-rich shell (green). This type of core and shell enhances the catalytic activity of the catalyst for the direct synthesis of H2O2 from H2 and O2.

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