Interaction of ethylene with the H-preadsorbed Pd(110) surface: Hydrogenation and H-D-exchange reactions

Journal Article · Thu Oct 15 04:00:00 EDT 1992 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100200a048· OSTI ID:263604

Sekitani, T; Takaoka, T; Fujisawa, M; Nishijima, M ^[1]

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1. Kyoto Univ. (Japan)

Interaction of ethylene with the H-preadsorbed Pd(110) surface has been studied by the use of thermal desorption spectroscopy and high-resolution electron energy loss spectroscopy. On the Pd(110)(2 x 1)-H surface saturated with ethylene at 90 weakly-adsorbed ethylene exists in addition to the {pi}-bonded ethylene. The fractional saturation coverage of ethylene is 0.2 which is nearly equal to that on the Pd(110) clean surface. The amount of ethane which is thermally desorbed is about 15 times as large as that from the Pd(110) clean surface. The ethane formation is promoted as the amount of preadsorbed hydrogen is increased. The H-D-exchange reaction for C{sub 2}D{sub 4} postadsorption on the H-preadsorbed Pd(110) surface is discussed. Experimental evidences are given which indicate that the ethane formation and H-D-exchange reaction occur predominately via ethyl species. The interaction of hydrogen with the ethylene-preadsorbed Pd(110) surface is briefly described. 27 refs., 11 figs., 2 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 263604
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 21 Vol. 96; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
CATALYTIC EFFECTS
DESORPTION
DEUTERIUM
ETHYLENE
HYDROGEN
HYDROGENATION
ISOTOPIC EXCHANGE
PALLADIUM