Method for quantitation of acid sites in acidic ionic liquids using silane and borane compounds
AssigneeUop LLC
InventorsSusie Martins, Erin M. Broderick
Life of this patent
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Abstract
A method of quantifying an amount of Brønsted acid sites in an acidic ionic liquid is described. The method involves adding a known amount of at least one silane or borane compound to the acidic ionic liquid being analyzed. The Brønsted acid sites in the acidic ionic liquid react with the silane or borane compound to form a silyl or boryl compound, resulting in an ionic liquid phase and a hydrocarbon phase which contains the silyl or boryl compound. The amount of silyl or boryl compound in the hydrocarbon phase is measured. From the measured amount of silyl or boryl compound formed, the amount of Brønsted acid sites can be determined.
Claims20
A method of quantifying an amount of Brønsted acid sites in an acidic ionic liquid comprising:
- contacting a known amount of at least one silane or borane compound with the acidic ionic liquid, the Brønsted acid sites in the acidic ionic liquid reacting with the at least one silane or borane compound resulting in an ionic liquid phase and a hydrocarbon phase comprising at least one silyl or boryl compound;
- measuring an amount of the at least one silyl or boryl compound in the hydrocarbon phase;
- determining the amount of Brønsted acid sites from the measured amount of the at least one silyl or boryl compound.
A method of quantifying an amount of Brønsted acid sites in an acidic ionic liquid comprising:
- contacting a known amount of at least one silane or borane compound with the acidic ionic liquid, the Brønsted acid sites in the acidic ionic liquid reacting with the at least one silane or borane compound resulting in an ionic liquid phase and a hydrocarbon phase comprising at least one silyl or boryl compound;
- separating the ionic liquid phase from the hydrocarbon phase;
- measuring an amount of the at least one silyl or boryl compound in the hydrocarbon phase using gas chromatography, infrared spectroscopy, nuclear magnetic resonance spectroscopy, x-ray fluorescence, liquid chromatography, ion chromatography, or combinations thereof;
- determining the amount of Brønsted acid sites from the measured amount of the at least one silyl or boryl compound.
Dependencies are inferred from the claim text.