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Water-Gas Shift Reaction on a Highly Active Inverse CeOx/Cu(111) Catalyst: Unique Role of Ceria Nanoparticles

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  • The work performed at BNL was supported by the US Department of Energy, Office of Basic Energy Sciences, under contract DE-AC02-98CH10886. J.E. and M.P. are grateful to INTEVEP for partial support of the work carried out at the UCV. The work done at Seville was funded by MICINN, grant no MAT2008-04918 and the Barcelona Supercomputing Center—Centro Nacional de Supercomputación (Spain).

Abstract

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CeO takes charge: Ceria grows forming small islands on terraces (2–5 nm, CeOx-I) and large islands on steps of a copper substrate (30–50 nm, CeOx-II; see scheme; 100×100 nm2). The resulting CeOx/Cu(111) systems display an extraordinary water-gas shift activity and illustrate the role that an oxide can play in improving the performance of copper-based catalysts.

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