Journal
JOURNAL OF CATALYSIS
Volume 275, Issue 1, Pages 99-107Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcat.2010.07.018
Keywords
Nanoparticles; Ruthenium; Ionic liquids; Size effect; Selective hydrogenation
Categories
Funding
- Ministere de l'Enseignement Superieur et de la Recherche, France
- EU
- ANR [ANR-07-CP2D-02-03]
- CNRS
Ask authors/readers for more resources
Tailor-made and size-controlled ruthenium nanoparticles. RuNPs, of three distinct sizes between 1 and 3 nm are generated from the decomposition of (eta(4)-1,5-cyclooctadiene)(eta(6)-1,3,5-cyclooctatriene) ruthenium(0) [Ru(COD)(COT)], under H-2 in 1-butyl-3-methylimidazolium bis(trifluoromethanesulphonyl)imide, C(1)C(4)ImNTf(2), by simply varying experimental conditions. Catalytic hydrogenation of 1,3-cyclo-hexadiene, CYD, and cyclohexene, CYE, in C(1)C(4)ImNTf(2), has been used as a probe for the relationship between size and catalytic performance (activity and selectivity) of RuNPs. To allow comparison between different reactions, all catalytic reaction mixtures were diligently prepared in order that the parameters such as substrate/catalyst and substrate/ionic liquid ratio, and therefore, viscosity and mass transport factors remained constant. It was found that the catalytic activity increases with the NP size, while high selectivity is only observed with the smaller NPs. In addition, the studied RuNPs exhibit a high level of recyclability with neither loss of activity nor significant agglomeration. (C) 2010 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available