Palladium–Silver Bimetallic Catalysts With Improved Activity and Selectivity for Ethylene Epoxidation
Engineering, Chemical Engineering, Catalysis and Reaction Engineering
Palladium addition to silver catalysts for ethylene epoxidation increases both catalyst activity and selectivity to ethylene oxide. These results confirm the predictions from density functional theory calculations that Pd–Ag bimetallics should improve selectivity relative to unpromoted silver. The performance of Pd–Ag catalysts is similar to that of Cu–Ag catalysts investigated previously, although the maximum selectivity obtained for the optimum Pd–Ag catalyst in the present study exceeds that achieved with Cu–Ag catalysts. Although there is evidence for greater complexity in the structure of these catalysts than has been incorporated in DFT models, these results provide an important additional example of catalyst identification and design from first principles.
Digital Object Identifier (DOI)
Published in Applied Catalysis A, Volume 391, Issue 1-2, 2011, pages 281-288.
© Applied Catalysis A, 2011, Elsevier
Dellamorte, C.J., Lauterbach A.J., Barteau, A.M. (2011). Palladium-silver bimetallic catalysts with improved activity and selectivity for ethylene epoxidation. Applied Catalysis A, 391(1-2), 281-288.