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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents

ID: 319642.0, Fritz-Haber-Institut / Inorganic Chemistry
Oxidative dehydrogenation of ethylbenzene to styrene over ultra-dispersed diamond and onion-like carbon
Authors:Su, Dang Sheng; Maksimova, Nadezhda I.; Mestl, Gerhard; Kuznetsov, Vladimir L.; Keller, Valérie; Schlögl, Robert; Keller, Nicolas
Research Context:Carbon in Catalysis
Date of Publication (YYYY-MM-DD):2007
Title of Journal:Carbon
Issue / Number:11
Start Page:2145
End Page:2151
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The catalytic properties of sp3-hybridized ultra-dispersed diamond and sp2-hybridized onion-like carbon in the oxidative dehydrogenation of ethylbenzene to styrene were investigated, highlighting the structure sensitivity of the reaction. The sp3-carbon led initially to C–C cleavage and benzene formation, while a switchover of the main reaction pathway into the styrene formation occurred with time on stream due to the formation of surface sp2 carbon, required for the selective styrene formation. This was confirmed by the behavior and the high stable styrene selectivity shown by onion-like carbons. High temperature oxygen pre-treatment created catalytically active species at the sp2 carbon surface, confirming that a high thermal stability carbon–oxygen complex was the active surface site for forming styrene.
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Microstructure
Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
External Affiliations:Boreskov Institute of Catalysis, Lavrentieva 5, Novosibirsk 630090, Russia
Laboratoire des Matériaux, Surfaces et Procédés pour la Catalyse, CNRS, Louis Pasteur University, 25 rue Becquerel, 67087 Strasbourg Cedex, France
European Laboratory for Catalysis and Surface Sciences (ELCASS)
Identifiers:URL:http://dx.doi.org/10.1016/j.carbon.2007.07.005 [only subscribers]
URL:http://www.sciencedirect.com/science?_ob=MImg&_ima... [only subscribers]
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