Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

The effect of ring size on the selective oxidation of cycloalkenes using supported metal catalysts

Alshammari, Hamed M., Miedziak, Peter John, Knight, David William, Willock, David James ORCID: https://orcid.org/0000-0002-8893-1090 and Hutchings, Graham John ORCID: https://orcid.org/0000-0001-8885-1560 2013. The effect of ring size on the selective oxidation of cycloalkenes using supported metal catalysts. Catalysis Science & Technology 3 (6) , pp. 1531-1539. 10.1039/c3cy20864h

Full text not available from this repository.

Abstract

In this work we expand on our previous studies on the oxidation of cyclic alkenes using supported gold nanoparticles together with catalytic amounts of peroxides. We demonstrate that various sized cyclic alkenes can be oxidised by this catalyst, under green conditions, without solvent and using air as the oxidant gas. The effect of support, preparation method and choice of metal have been investigated, we demonstrate that supported gold is superior to palladium or a gold palladium alloy, we show that oxides provide the best support for these gold catalysts and the preparation methods that afford the smallest particles are the most active. We show that the reactivity of the cyclic alkenes is related to the ring size with the smaller rings more reactive than the larger rings at the same temperature. The selectivity to the epoxide is dependent on the size of the cyclic alkene ring. In particular, the epoxide selectivity is very low for rings containing fewer than seven carbon atoms. We discuss the origins of this selectivity effect, using DFT calculations to investigate the effect of ring strain on the intermediates and reaction products.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Advanced Research Computing @ Cardiff (ARCCA)
Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
ISSN: 2044-4753
Last Modified: 06 May 2023 01:30
URI: https://orca.cardiff.ac.uk/id/eprint/52179

Citation Data

Cited 19 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item