Jump to main content
Jump to site search

Issue 6, 2012
Previous Article Next Article

Ruthenium nanoparticlecatalysts stabilized in phosphonium and imidazolium ionic liquids: dependence of catalyst stability and activity on the ionicity of the ionic liquid

Author affiliations

Abstract

Ruthenium nanoparticles (Ru NPs) were synthesized from the reduction of Ru(2-methylallyl)2(cod) under an atmosphere of H2(g) in a series of phosphonium and imidazolium ionic liquids (ILs): [P4,4,4,1]NTf2, [P4,4,4,8]NTf2, [P4,4,4,14]X (for X = NTf2, OTf, PF6), [BMI]NTf2 and [BDMI]NTf2. The Ru NPs embedded in each of these ILs were used as biphasic hydrogenation catalysts for the reduction of cyclohexene. The properties of the NPs, in terms of NP stability and catalytic activity, were dependent on the nature of the IL and these differences were rationalized through a Walden plot analysis of the IL ionicity. This analysis supports the idea that the formation of ion associations, in terms of ion-pairs or supramolecular aggregates, plays a key role in IL stabilization of metal NPs. A correlation between this stabilization mechanism and the NP stability and catalytic activity is hypothesized.

Graphical abstract: Ruthenium nanoparticle catalysts stabilized in phosphonium and imidazolium ionic liquids: dependence of catalyst stability and activity on the ionicity of the ionic liquid

Back to tab navigation

Supplementary files

Article information


Submitted
17 Feb 2012
Accepted
21 Mar 2012
First published
23 Mar 2012

Green Chem., 2012,14, 1736-1742
Article type
Paper

Ruthenium nanoparticle catalysts stabilized in phosphonium and imidazolium ionic liquids: dependence of catalyst stability and activity on the ionicity of the ionic liquid

K. L. Luska and A. Moores, Green Chem., 2012, 14, 1736 DOI: 10.1039/C2GC35241A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.


Social activity

Search articles by author

Spotlight

Advertisements