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Catalytic Activity and Poisoning of Specific Sites on Supported Metal Nanoparticles
Author(s) -
Schauermann Swetlana,
Hoffmann Jens,
Johánek Viktor,
Hartmann Jens,
Libuda Jörg,
Freund HansJoachim
Publication year - 2002
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 - 10.1002/1521-3773(20020715)41:14<2532::aid-anie2532>3.0.co;2-3
Subject(s) - dehydrogenation , catalysis , nanoparticle , breakage , methanol , decomposition , materials science , metal , photochemistry , chemical engineering , particle (ecology) , chemistry , nanotechnology , organic chemistry , composite material , engineering , oceanography , geology
Catalytically active nanoparticle sites : Different catalytic activity of different active sites coexisting on a supported nanoparticle has been directly observed using molecular‐beam techniques and in situ surface vibrational spectroscopy. For methanol decomposition on a supported Pd model catalyst (see picture), it is shown that carbon–oxygen‐bond breakage and dehydrogenation occur as competing reaction pathways at particle defects and on regular facets, respectively.