NDLI: Adsorption and reaction of ethene on oxide-supported Pd, Rh, and Ir particles

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Adsorption and reaction of ethene on oxide-supported Pd, Rh, and Ir particles

Content Provider	Semantic Scholar
Author	Frank, Martin Bäumer, Marcus Kuehnemuth, Ralf Freund, Hans-Joachim
Copyright Year	2001
Abstract	Supported metal clusters and nanoparticles are of fundamental and technical interest, their use in heterogeneous catalysis being of particular importance. Yet on the atomic scale, there is only limited knowledge about the dependence of adsorption behavior and catalytic activity on particle size and morphology. In order to contribute to an understanding of such relationships in the case of hydrocarbon reactivity, we have studied the interaction of ethene with alumina-supported Pd, Rh, and Ir particles. Aggregates ranging in size from a few atoms up to several thousand atoms were prepared by metal vapor deposition onto a planar oxide support under ultrahigh vacuum conditions. The adsorption and dehydrogenation of ethene have been investigated by infrared and photoelectron spectroscopy. The infrared data reveal the formation of both π and di-σ bonded species upon adsorption at 90 K. On Pd, this involves a net charge transfer from the adsorbate to the metal, as shown by infrared spectra of co-adsorbed carbon ...
Starting Page	1497
Ending Page	1501
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1116/1.1336828
Volume Number	19
Alternate Webpage(s)	http://w0.rz-berlin.mpg.de/hjfdb/pdf/294e.pdf
Alternate Webpage(s)	https://doi.org/10.1116/1.1336828
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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