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Brown grease breaks down into a mixture of alkanes and alkenes at temperatures above 300°C without addition of hydrogen or an external catalyst. To better understand the reactions in this process, pyrolysis experiments were performed on palmitic and oleic acids as model systems for the saturated and unsaturated fatty acids in brown grease, respectively. Iron (III) sulfate was used in half of the experiments,...
Chemical exfoliation of graphite under strong oxidizing conditions yields graphene oxide nanosheets with oxy functional groups on the carbon basal plane. The importance of ozone in the chemical oxidation mechanism of graphite by the widely-used Hummers' method has been largely overlooked. Herein we demonstrate that the ozonolysis of graphite leads to the formation of secondary epoxy and peroxymonosulfate...
A novel approach towards the synthesis of radiolabeled organometallic rhenium complexes is presented. We successfully synthesized and analyzed the first 188Re‐labeled N‐heterocyclic biscarbene complex, trans‐dioxobis(1,1′‐methylene‐bis(3,3′‐diisopropylimidazolium‐2‐ylidene))188rhenium(V) hexafluorophosphate (188Re‐4) via transmetalation using an air‐stable and moisture‐stable silver(I) biscarbene...
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