L-n-hexyl-3-methylimidazolium

The ionic liquid l-n-hexyl-3-methylimidazolium bis(trifiuorosulfonyl)imide, [hmim] [TfaN], was synthesized and characterized using standard procedures [17-19] at the University of Notre Dame. The ionic liquid l-(3-aminopropyl)-3-methylimidazolium bis(trifiuoromethylsulfonyl)imide, [H2NC3H5mim][Tf2N], was also synthesized and characterized at the University of Notre Dame [20]. 

Glycidyl methacrylate (purity 98 %) was purchased fiom Aldrich. Ionic liquids based on 1-n-ethyl-3-methyliinidazolium (EMIm), l-n-butyl-3-methylimidazolium (BMhn), 1-n-hexyl-3-methylimidaJ5Dlium (HMhn) with dififeent anions such as CT, BF4", PFg wo e prepared according to the procedures reported previously. Copolymerization of glycidyl methacrylate (GMA) and CO2 were carried out in a 50 mL stainless steel autoclave equipped with a... 

Chakrabarty, D., Chakraborty, A., Seth, D., and Sarkar, N. 2005. Effect of water, methanol, and acetonitrile on solvent relaxation and rotational relaxation of Coumarin 153 in neat l-hexyl-3-methylimidazolium hexafluorophosphate. J. Phys. Chem. A 109, 1764-1769. 

Gomez, E. Calvar, N. Dominguez, I. Dominguez A. (2006c). Physical properties of the ternary mixture ethanol water l-hexyl-3-methylimidazolium chloride at 298.15 K. Phys.Chem.Licj. 44,4 (2006) 409-417. 

When Br0nsted acidic ILs l-hexyl-3-methylimidazolium tetrafluoroborate [HMIM]BF4 (Lu et al., 2007) and N-methyl-pyrrolidonium tetrafluoroborate [HNMP]Bp4 (Zhao et al., 2007) were used for desulfurization in the presence of H2O2, sulfur compounds can be deeply removed due to formation of hydroxyl radicals. For [HMIM]BF4the DBT remotion was 93% when a mixture of 3.2 mL of model oil and 5.0 mL of the IL were stirring at 90 °C during 6 h. In the case of [HNMP]BF4 the efficiency of sulfur extraction was 99.4% for fuel diesel (total sulfur 3240 ppm) at ratio of 1 1 and 2 h of reaction time at 60 °C. The IL was recycled 7 times without a significant decrease in desulfurization. 

Letcher, T. M. Reddy, P. (2005). Ternary (liquid + liquid) equilibria for mixtures of 1-hexyl-3-methylimidazolium (tetrafluoroborate or hexafluoroborate)+ benzene+an alkane atT=298.2 K andp=0.1 MPa, /, Chem. Thermodyn. 37,415-421, ISSN 0021-9614. Letcher, T. M. Deenadayalu, N. Soko, B. Ramjugernath, D. Naicker, P. K. (2003). Ternary liquid-liquid equilibria for mixtures of l-methyl-3-octylimida-zolium chloride + an alkanol + an alkane at 298.2 K and 1 bar. /. Chem. Eng. Data, 48, 904-907, ISSN 1520-5134. 

E) l-Ethyl-3-methylimidazolium n-hexyl sulfate (IL) water (1 1)—(polar phase)/ sodium dodecyl sulfate (SDS)/toluene-pentanol (1 1) ... 

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