15–318.15) K and at atmospheric pressure. From density data the apparent molarvolumes and partial molarvolumes of the ILs at infinite dilution as well as the limiting apparent molar expansibilities and the Hepler’s constant values have been evaluated. The results have been discussed in terms of the effect that alkyl chain length of the ILs and experimental temperature have on the ionic liquid–acetonitrile
Interactions of N-alkyl-N-methylmorpholinium based ionic liquids with acetonitrile studied by density and velocity of sound measurements and molecular dynamics simulations
apparent molarvolumes and the apparent molar compressibilities as a function of molality. Then, an extrapolation procedure based on Masson and Redlich–Meyer equations were applied to evaluate the values of the limiting apparent molar volume and the limiting apparent molar compressibility. The limiting apparent molar expansibility coefficients were obtained from the slopes of the apparent molar volume
Use of ionic liquids containing tricyanomethide anions as solvents for the extraction of alcohols from aqueous solutions
申请人:Pitner William-Robert
公开号:US20110112337A1
公开(公告)日:2011-05-12
The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tricyanomethide anion as solvent.
本发明涉及一种使用至少一种含有三氰甲基阴离子的离子液体作为溶剂,从水溶液中液液萃取醇的方法。
Use of ionic liquids with tetracyanoborate anions as a solvents for extraction of alcohols from aqueous solutions
申请人:Pitner William-Robert
公开号:US20110071324A1
公开(公告)日:2011-03-24
The invention relates to a method for the liquid-liquid extraction of alcohols from aqueous solutions using at least one ionic liquid containing a tetra-cyanoborate anion as solvent.
该发明涉及使用至少含有四氰硼酸根离子的离子液体作为溶剂,从水溶液中液液萃取醇的方法。
Physico-chemical properties and nanoscale morphology in N-alkyl-N-methylmorpholinium dicyanamide room temperature ionic liquids
A series of new room temperature ionic liquids based on N-alkyl-N-methylmorpholinium cations (the alkyl chain ranging from ethyl to nonyl) and a hydrophilic anion (dicyanamide), a mostly unexplored class of room temperature ionic liquids (RTILs), has been synthesized and characterized. Selected physico-chemical properties (density, viscosity and ionic conductivity) have been measured and the salts' propensity to organize into ionic clusters has been explored. The inspection of their Walden plots and electrospray ionization spectra strongly prompts for the occurrence of clustering phenomena, especially for salts bearing long alkyl chains. This structural organization has been confirmed using X-ray scattering techniques and the existence of a high degree of intermediate range order has been detected, as fingerprinted by distinct diffraction features at low Q. These evidences are rationalized in terms of a structural model where, similarly to other RTILs, the alkyl chains tend to segregate from the charged moieties. (C) 2013 Elsevier B.V. All rights reserved.