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Mononuclear Ruthenium Hydride Species versus Ruthenium Nanoparticles: The Effect of Silane Functionalities on Silica Surfaces
Author(s) -
Berthoud Romain,
Baudouin Anne,
Fenet Bernard,
Lukens Wayne,
Pelzer Katrin,
Basset JeanMarie,
Candy JeanPierre,
Copéret Christophe
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800174
Subject(s) - silanes , ruthenium , silane , hydride , covalent bond , chemistry , catalysis , nanoparticle , metal , photochemistry , polymer chemistry , chemical engineering , inorganic chemistry , organic chemistry , materials science , nanotechnology , engineering
Aggregation is not a fate! Replacing silica surface silanols with silanes allows [Ru(cod)(cot)] to be grafted by a covalent RuSi bond, which avoids the growth of metal particles during treatment under H 2 at 300 °C. This affords supported mononuclear Ru hydride species, which display catalytic properties different from those of supported Ru particles (2 nm), selectively hydrogenating alkenes over aromatic compounds. cod=cyclooctadiene, cot=cyclooctatriene.