Abstract
Ionic liquids are currently being used in combination with supercritical fluids for catalytic reactions due to the ease of extraction of reaction products by fluids from such bi-phasic systems. In this investigation we report interesting chemistry involving a simple salt hydrate, tetramethylammonium fluoride tetrahydrate, [(CH 3) 4N]F·4H 2O, as a neat melt and dissolved in methanol in contact with supercritical and subcritical CO 2. This hydrate is proposed as a simulant for more complex ionic liquids, to investigate any potential secondary reaction chemistry in these solvent systems with carbon dioxide. Evidence is presented for the formation of methylcarbonate, CH 3O(CO)O −, and fluoromethane, CH 3F, in solution when the salt hydrate is in contact with methanol and CO 2.
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