Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9567037 | Applied Surface Science | 2005 | 8 Pages |
Abstract
The adsorption of six-membered hydrocarbon cycles and cyclopentane and the interaction of hydrogen with the adsorbed layer on polycrystalline Pt-foil have been studied. The work function change (ÎÏ) was followed by a Kelvin probe and the C/Pt peak ratio was determined by Auger electron spectroscopy. Combining these two techniques made it possible to distinguish between chemisorption via Ï-bonds and Ï-complex formation. Benzene and toluene adsorbed first as Ï-complex while cyclohexane showed initially a partial aromatization and a Ï-complex-like bonding to the surface. Excess hydrocarbon or addition of hydrogen transformed the Ï-complex into Ï-bonded species. Cyclopentane adsorbed via Ï-bonds and showed no significant hydrogen effect.
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Authors
Zoltán Hlavathy, Pál Tétényi,