Adsorption and reactions of ethyne. Effects of modifiers and formation of bimetallics
- 1 January 1989
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Discussions of the Chemical Society
- Vol. 87, 311-320
- https://doi.org/10.1039/dc9898700311
Abstract
Adsorption of C2H2 and C2H4 has been studied with Pd(111) and Pd–Cu(111) single-crystal planes using EELS. The formation of dissociatively adsorbed species is controlled by ensemble size effects. The catalytic experiments performed with powder catalysts reveal that formation of bimetallics from an active and an inactive metal or diminishing the particle size increase the selectivity to ethene. This supports the idea that the increase is due to suppression of dissociatively adsorbed, possibly multiply bound, species.Keywords
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