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

被引：82

作者：

Doyle, AM ^{[1
]}

Shaikhutdinov, SK ^{[1
]}

Freund, HJ ^{[1
]}

Freund, J ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2005年 / 44卷 / 04期

关键词：

D O I：

10.1002/anie.200461614

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Size matters: The adsorption of trans-2-pentene on Pd/Al2O 3 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-σ-bonded pentene, which is favored on the terrace sites of large particles, and π-bonded ethene.

引用

页码：629 / 631

页数：3

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