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Fest/Gas-Reaktion zur Darstellung von geträgerten intermetallischen Ga-Pd Katalysatormaterialien

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Schmidt,  Marcus
Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Grin,  Yuri
Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Armbrüster,  Marc
Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Schmidt, M., Kovnir, K., Deichsel, J., Binnewies, M., Grin, Y., & Armbrüster, M. (2015). Fest/Gas-Reaktion zur Darstellung von geträgerten intermetallischen Ga-Pd Katalysatormaterialien. Zeitschrift für anorganische und allgemeine Chemie, 641, 1061-1068. doi:10.1002/zaac.201500095.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0027-A4E0-1
Abstract
The reaction between Ga-containing gas-phase species and palladium nanoparticles was investigated systematically concerning the possibility of a controlled formation of supported intermetallic Ga-Pd compounds. As the gallium-richest compound, GaPd can be prepared by this approach and also the compound GaPd2 can be obtained. The limited accessibility in the Ga-Pd system can be understood considering the thermodynamic data of the involved species. Synthesised materials were tested for their catalytic properties in the semi-hydrogenation of acetylene. GaPd2/C exhibits considerably inferior catalytic properties directly after synthesis due to the presence of iodine-containing species on the surface. However, those iodine-containing species can be removed by subsequent washing of the material with aqueous EDTA or formic acid to yield a highly active and selective material.