Ionic liquid-based hydrogen sulfide and mercaptan scavengers
Treatment of hydrocarbon streams, e.g. gasoline, with basic ionic liquids (ILs), results in reduction of the sulfur compounds such as H2S thiophenes, disulfides, thioethers, and/or mercaptans that are present to remove these compounds. The IL is a quaternary ammonium compound having the formula R4N+...
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| creator | Nguyen, Henry Cappel, Weldon J Phan, Kimchi T Weers, Jerry J |
| description | Treatment of hydrocarbon streams, e.g. gasoline, with basic ionic liquids (ILs), results in reduction of the sulfur compounds such as H2S thiophenes, disulfides, thioethers, and/or mercaptans that are present to remove these compounds. The IL is a quaternary ammonium compound having the formula R4N+ X− or X− R3N+R′N+R3 X−, where R is independently an alkyl group, an alkylbenzyl group, a hydroxyalkyl group, or a hydroxyalkylbenzyl group, and R is straight or branched and has 1-22 carbon atoms, R′ is a straight or branched alkylene or oxyalkylene having 1 to 10 carbon atoms, and where X− can be hydroxide, carbonate, alkylcarbonate, bicarbonate or alkoxide, where the alkyl group of the alkylcarbonate or alkoxide, if present, is straight or branched and has 1 to 8 carbon atoms. The ILs can be used in applications where liquid or gaseous hydrocarbon fluids are treated by direct injection or by extraction. |
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The IL is a quaternary ammonium compound having the formula R4N+ X− or X− R3N+R′N+R3 X−, where R is independently an alkyl group, an alkylbenzyl group, a hydroxyalkyl group, or a hydroxyalkylbenzyl group, and R is straight or branched and has 1-22 carbon atoms, R′ is a straight or branched alkylene or oxyalkylene having 1 to 10 carbon atoms, and where X− can be hydroxide, carbonate, alkylcarbonate, bicarbonate or alkoxide, where the alkyl group of the alkylcarbonate or alkoxide, if present, is straight or branched and has 1 to 8 carbon atoms. 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The IL is a quaternary ammonium compound having the formula R4N+ X− or X− R3N+R′N+R3 X−, where R is independently an alkyl group, an alkylbenzyl group, a hydroxyalkyl group, or a hydroxyalkylbenzyl group, and R is straight or branched and has 1-22 carbon atoms, R′ is a straight or branched alkylene or oxyalkylene having 1 to 10 carbon atoms, and where X− can be hydroxide, carbonate, alkylcarbonate, bicarbonate or alkoxide, where the alkyl group of the alkylcarbonate or alkoxide, if present, is straight or branched and has 1 to 8 carbon atoms. 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| subjects | CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA SEPARATION TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING |
| title | Ionic liquid-based hydrogen sulfide and mercaptan scavengers |
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