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Hydrogenation on Metal Surfaces: Why are Nanoparticles More Active than Single Crystals?
Author(s) -
Doyle Aidan M.,
Shaikhutdinov Shamil K.,
Jackson S. David,
Freund HansJoachim
Publication year - 2003
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200352124
Subject(s) - metal , nanoparticle , materials science , nanotechnology , chemical engineering , metallurgy , engineering
Size matters : Under low‐pressure conditions, hydrogenation of alkenes, such as 2‐pentene and ethene, is shown to occur on supported palladium nanoparticles, whereas single‐crystal palladium surfaces are inactive. This finding is rationalized on the basis of the accessibility of weakly bound subsurface hydrogen (see picture), which is enhanced on particles of nanometer dimensions.