Ethanol → Ethyl Oleate

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A mixture of ethanol and oleic acid (ethanol: 0.1 mol, oleic acid: 0.01 mol) was added with 0.2 g of the sulfonate-group-introduced amorphous carbon, and the resulting mixture was maintained at 80° C. to produce ethyl oleate. The amount of ethyl oleate produced was quantified on a gas chromatography-mass spectrometer (Shimadzu GCMS-QP5050). The rate of production of ethyl oleate was 0.42 mmol/h, which was 10 times or more greater than that achieved using the same weight of a polymeric solid acid “Nafion” (an already-existing solid acid having a high acid catalyst activity) as a catalyst and exceeds 50% of that achieved using the same weight of sulfuric acid as a catalyst.

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