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Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes

Pattisson, Samuel, Nowicka, Ewa, Gupta, Upendra N., Shaw, Greg, Jenkins, Robert, Morgan, David, Knight, David and Hutchings, Graham 2016. Tuning graphitic oxide for initiator- and metal-free aerobic epoxidation of linear alkenes. Nature Communications 7 , 12855. 10.1038/ncomms12855

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Abstract

Graphitic oxide has potential as a carbocatalyst for a wide range of reactions. Interest in this material has risen enormously due to it being a precursor to graphene via the chemical oxidation of graphite. Despite some studies suggesting that the chosen method of graphite oxidation can influence the physical properties of the graphitic oxide, the preparation method and extent of oxidation remain unresolved for catalytic applications. Here we show that tuning the graphitic oxide surface can be achieved by varying the amount and type of oxidant. The resulting materials differ in level of oxidation, surface oxygen content and functionality. Most importantly, we show that these graphitic oxide materials are active as unique carbocatalysts for low-temperature aerobic epoxidation of linear alkenes in the absence of initiator or metal. An optimum level of oxidation is necessary and materials produced via conventional permanganate-based methods are far from optimal.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Chemistry
Uncontrolled Keywords: Catalyst synthesis Heterogeneous catalysis
Publisher: Nature Publishing Group
ISSN: 2041-1723
Date of First Compliant Deposit: 3 October 2016
Date of Acceptance: 8 August 2016
Last Modified: 24 Apr 2019 20:36
URI: http://orca-mwe.cf.ac.uk/id/eprint/95051

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