TY - JOUR
T1 - A high-pressure NMR investigation of reaction chemistries in a simple salt hydrate
AU - Yonker, Clement R.
AU - Linehan, John C.
N1 - Funding Information:
Work at the Pacific Northwest National Laboratory (PNNL) was supported by the Office of Science, Office of Basic Energy Sciences, Chemical Sciences Division of the US Department of Energy, under Contract DE-AC076RLO 1830.
PY - 2004/5
Y1 - 2004/5
N2 - 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, [(CH3)4N]F·4H2O, as a neat melt and dissolved in methanol in contact with supercritical and subcritical CO2. 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, CH3O(C=O)O-, and fluoromethane, CH3F, in solution when the salt hydrate is in contact with methanol and CO2.
AB - 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, [(CH3)4N]F·4H2O, as a neat melt and dissolved in methanol in contact with supercritical and subcritical CO2. 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, CH3O(C=O)O-, and fluoromethane, CH3F, in solution when the salt hydrate is in contact with methanol and CO2.
KW - High-pressure NMR
KW - Ionic liquid
KW - Methylcarbonate
KW - Salt hydrate
KW - Supercritical fluids
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U2 - 10.1016/S0896-8446(03)00089-5
DO - 10.1016/S0896-8446(03)00089-5
M3 - Article
AN - SCOPUS:16544381014
VL - 29
SP - 257
EP - 263
JO - Journal of Supercritical Fluids
JF - Journal of Supercritical Fluids
SN - 0896-8446
IS - 3
ER -