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Pinning the catalytic centre: A new concept for catalysts development

MPS-Authors
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Kovnir,  Kirill
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Teschner,  Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Armbrüster,  Marc
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schnörch,  Peter
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Hävecker,  Michael
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Knop-Gericke,  Axel
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

Grin,  Yuri
Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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HL2007_Kovnir.pdf
(Publisher version), 4MB

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Citation

Kovnir, K., Teschner, D., Armbrüster, M., Schnörch, P., Hävecker, M., Knop-Gericke, A., et al. (2008). Pinning the catalytic centre: A new concept for catalysts development. In K. Godehusen (Ed.), BESSY Highlights 2007 (pp. 22-23). Berlin: Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung m.b.H. (BESSY).


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-FE23-4
Abstract
A new concept for the development of catalysts is introduced. Utilizing ordered Pd-Ga intermetallic compounds high selectivity and long-term stability in the acetylene hydrogenation can be achieved. The high selectivity observed for all compounds (Pd3Ga7, PdGa, Pd2Ga) indicates that not only the surface geometric site isolation but also the suppression of hydride formation through a covalent bonding interaction absent in conventional Pd alloys are important for achieving superior catalytic properties. Our results demonstrate that structurally well-defined intermetallic compounds exhibit a high potential in heterogeneous catalysis and are promising candidates for industrial applications.