Heterogeneously Catalyzed Aerobic Oxidation of Methane to a Methyl Derivative

Open access
Date
2021-08-09Type
- Journal Article
Abstract
A promising strategy to break through the selectivity-conversion limit of direct methane conversion to achieve high yields is the protection of methanol via esterification to a more stable methyl ester. We present an aerobic methane-to-methyl-ester approach that utilizes a highly dispersed, cobalt-containing solid catalyst, along with significantly more favorable reaction conditions compared to existing homogeneously-catalyzed approaches (e.g. diluted acid, O2 oxidant, moderate temperature and pressure). The trifluoroacetic acid medium is diluted (<25 wt %) with an inert fluorous co-solvent that can be recovered after the separation of the methyl trifluoroacetate via liquid–liquid extraction at ambient conditions. Silica-supported cobalt catalysts are highly active in this system, with competitive yields and turnovers in comparison to known aerobic transition metal-based catalytic systems. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000493759Publication status
publishedExternal links
Journal / series
Angewandte Chemie. International EditionVolume
Pages / Article No.
Publisher
WileySubject
Cobalt; fluorous solvents; heterogeneous catalysis; Methyl ester; Product protectionOrganisational unit
03746 - Van Bokhoven, Jeroen A. / Van Bokhoven, Jeroen A.
Funding
178943 - Catalyst structures in three dimensions (SNF)
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