Shape and Size-Tailored Pd Nanocrystals to Study the Structure Sensitivity of 2-Methyl-3-butyn-2-ol Hydrogenation: Effect of the Stabilizing Agent |
| |
Authors: | Lioubov Kiwi-Minsker Micaela Crespo-Quesada |
| |
Affiliation: | 1. Group of Catalytic Reaction Engineering, Ecole Polytechnique F??d??rale de Lausanne, 1015, Lausanne, Switzerland
|
| |
Abstract: | Uniform Pd nanocrystals of cubic, octahedral and cube-octahedral shapes were synthesized via a solution-phase method using two stabilizers: poly (vinyl pyrrolidone) (PVP) and di-2-ethylhexylsulfoccinate (AOT) and tested in the hydrogenation of 2-methyl-3-butyn-2-ol. The AOT-stabilized Pd nanocrystals were found to be an order of magnitude more active, but less selective than those stabilized by PVP. This could be attributed to a stronger interaction of PVP with surface Pd by adsorbed N-containing groups. The results obtained were rationalized applying a two-site Langmuir?CHinshelwood kinetic model that allowed predicting 3?C4?nm cubic or octahedral nanocrystals stabilized by AOT as the optimum active phase ensuring the highest production rate of target MBE. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |