Collect. Czech. Chem. Commun. 1983, 48, 3196-3201

Work function and UPS studies of propylene and cyclopropane adsorption on palladium surfaces

Zdeněk Bastl

The J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 121 38 Prague 2


The Kelvin vibrating capacitor method was used to measure the work function changes of vacuum deposited thin palladium layers in propylene adsorption. The work function change found for the propylene-saturated surface is, within the experimental error, identical with the change observed in the adsorption of cyclopropane and equal -1.085 ± 0.07 eV. Propylene and cyclopropane adsorption leads in the region of higher surface coverages to similar difference UV photoelectron spectra, exhibiting emission bands located at 6.7, 8.2 and 9.3 eV below the Fermi level. It is obvious from the results that at T ≈ 300 K, the adsorption of propylene and cyclopropane leads at higher coverages with high probability to similar surface complexes.