DESULFURIZATION OF HYDROCARBONS BY IONIC LIQUIDS AND PREPARATION OF IONIC LIQUIDS
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United States of America Patent
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Jan 3, 2013
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May 26, 2008
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Abstract
The present invention relates to an improved desulfurization process using an ionic liquid compound of general formula C+A−, where C+ represents an organic cation such as alkyl-pyridinium, di-alkyl imidazolium and tri-alkyl imidazolium; and A− is an anion of halides of iron (III), such as, for example, FeCl4−. The desulfurization process is also improved when producing the ionic liquid compound by heating the reactants using microwave energy. The ionic liquids can be used to desulfurize hydrocarbon mixtures by a liquid-liquid extraction.
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