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Influence of the support on surface rearrangements of bimetallic nanoparticles in real catalysts

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Science  31 Oct 2014:
Vol. 346, Issue 6209, pp. 620-623
DOI: 10.1126/science.1258106

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Supported nanoparticles make the reaction faster

Several techniques now allow surface structures used as catalysts to be probed during exposure to reactive gases, as opposed to under vacuum conditions. Divins et al. used near-ambient-pressure x-ray photoelectron spectroscopy to compare the effect of reaction gases on unsupported palladium-rhodium nanoparticles versus ones on a reducible cerium oxide support. For the reaction of ethanol with steam to produce hydrogen, the supported nanoparticles were more reactive and less prone to reduction and surface rearrangement.

Science, this issue p. 620