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Surface-bonded precursor determines particle size effects for alkene hydrogenation on palladium

Doyle, Aidan and Shaikhutdinov, Shamil K. and Freund, Hans-Joachim (2005) Surface-bonded precursor determines particle size effects for alkene hydrogenation on palladium. Angewandte chemie, 44 (4). pp. 629-631. ISSN 1521-3773

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Abstract

Size matters: The adsorption of trans-2-pentene on Pd/Al2O3 model catalysts exhibits site-specific behavior, which results in a strong increase in hydrogenation activity within the 1-5-nm particle size range, in contrast to ethene hydrogenation (see figure). The size effects are explained by the reactions proceeding via di--bonded pentene, which is favored on the terrace sites of large particles, and -bonded ethene.

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