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Surface Spectroscopy and Catalytic Properties of Model Platinum Catalysts Exposed to Hydrocarbons

MPS-Authors
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Paal,  Zoltan
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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

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Wild,  Ute
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Innsbr_C.pdf
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Citation

Paal, Z., Wootsch, A., Schlögl, R., & Wild, U. (2003). Surface Spectroscopy and Catalytic Properties of Model Platinum Catalysts Exposed to Hydrocarbons. Poster presented at EUROPACAT VI, Innsbruck, Germany.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-0F51-8
Abstract
Hydrocarbonaceous deposits are normally present on Pt during hydrocarbon reactions. Carbon deposition is dehydrogenated during evacuation and appear as “graphitic”,“polymeric” and “deactivating” carbon. The latter may correspond to “disordered” carbon. C atoms on Pt can also be present. Activity and selectivities of “skeletal” reactions of hexane (isomerization, C5-cyclization, aromatization, fragmentation) are influenced by the amount and chemical state of carbon. This depends of the temperature of treatment and the presence of H2.