Our news journalists obtained a quote from the research, "At low temperatures (220-260 K), hydrogenation activity was only maintained over the C-modified Pd particles, while at temperatures (>= 280 K) persistent hydrogenation was observed over all Pd catalysts at comparable rates. Two principal reaction mechanisms are discussed that could be responsible for the observed hydrogenation activity at different Pd surfaces. We show that on Pd nanoparticles, the reaction mechanism involving subsurface hydrogen species plays an important role under all investigated conditions. This subsurface-related reaction pathway relies on an effective replenishment of the subsurface hydrogen reservoir, which is affected by the presence of strongly adsorbed hydrocarbon species that are formed in the induction period."
According to the news editors, the research concluded: "We discuss the correlation between the induction times and the hydrogenation activity of different Pd surfaces."
For more information on this research see: Temperature dependence of the 2-butene hydrogenation over supported Pd nanoparticles and Pd(111).
The news correspondents report that additional information may be obtained from A. Savara,
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