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Palladium-tin catalysts for the direct synthesis of H<sub>2</sub>O<sub>2</sub> with high selectivity [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2016.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
pages 965-968 : digital, PDF file
Additional Creators
Oak Ridge National Laboratory, United States. Department of Energy, Belgium. Office of the European Research Council Executive Agency (ERCEA), and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The direct synthesis of hydrogen peroxide (H2O2 ) from H2 and O2 represents a potentially atom-efficient alternative to the current industrial indirect process. We show that the addition of tin to palladium catalysts coupled with an appropriate heat treatment cycle switches off the sequential hydrogenation and decomposition reactions, enabling selectivities of >95% toward H2O2 . This effect arises from a tin oxide surface layer that encapsulates small Pd-rich particles while leaving larger Pd-Sn alloy particles exposed. In conclusion, we show that this effect is a general feature for oxide-supported Pd catalysts containing an appropriate second metal oxide component, and we set out the design principles for producing high-selectivity Pd-based catalysts for direct H2O2 production that do not contain gold.
Report Numbers
E 1.99:1240555
Subject(s)
Note
Published through SciTech Connect.
02/25/2016.
Science 351 6276 ISSN 0036-8075 AM
Simon J. Freakley; Qian He; Jonathan H. Harrhy; Li Lu; David A. Crole; David J. Morgan; Edwin N. Ntainjua; Jennifer K. Edwards; Albert F. Carley; Albina Y. Borisevich; Christopher J. Kiely; Graham J. Hutchings.
Funding Information
AC05-00OR22725
ERC-2011-ADG
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