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Activating Ru nanoparticles on oxide supports for ring-opening metathesis polymerization.

Abstract

Nano-sized particles mounted on heterogeneous oxide supports such as silica have altered reactivity when compared to their homogeneous analogs. In particular, catalyzed olefin metathesis using supported Ru nanoparticles has shown great promise and various methods have been employed to develop functional heterogeneous Ru catalysts. This article reports a method for synthesizing Ru nanoparticles supported on silica and titania. The nanoparticles were characterized using XPS showing Ru(0) dominates when not exposed to air. TEM showed Ru nanoparticle sizes of 3.1±0.8 nm for Ru supported on SiO2 and 5.6±1.3 nm for Ru supported on TiO2. The materials demonstrated modest activity in ring-opening metathesis reactions via diazo activation and nanoparticle-embedded polymers of norbornene and norbornadiene were synthesized using dry box and Schlenk line techniques. The Ru/support/polymer composite materials were characterized using proton NMR, XPS, and SEM/EDS.

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Publication details

The article was received on 27 Jan 2018, accepted on 08 May 2018 and first published on 16 May 2018


Article type: Paper
DOI: 10.1039/C8DT00354H
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Activating Ru nanoparticles on oxide supports for ring-opening metathesis polymerization.

    A. Mantanona, K. Wood, Y. Schrodi and S. Garrett, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT00354H

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