PUMA
Istituto dei materiali per l'elettronica ed il magnetismo     
Vattuone L., Gerbi A., Rocca M., Valbusa U., Pirani F., Vecchiocattivi F., Cappelletti D. Stereodynamic Effects in the Adsorption of Ethylene onto a Metal Surface. In: Angewandte Chemie-International Edition, vol. 43 (39) pp. 5200 - 5203. Wiley, 2004.
 
 
Abstract
(English)
The role of molecular alignment of nonpolar molecules in gas-surface interactions has so far escaped direct experimental investigations. We have employed a novel technique to prepare highly aligned supersonic beams and we show that ethylene molecules that impinge on silver surfaces precovered with molecular oxygen as "helicopters" have a higher sticking probability than "cartwheels" (Figure 1). The sticking probability, S, of reactant gas-phase molecules impinging on a metal surface is a key parameter for the quantitative understanding of heterogeneous catalysis at the gas-solid interface.
URL: http://onlinelibrary.wiley.com/doi/10.1002/anie.200461302/abstract
DOI: 10.1002/anie.200461302
Subject heterogeneous catalysis
hydrocarbons
molecular beams
silver
surface chemistry


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