27096-30-6Relevant articles and documents
Thermodynamic studies of aqueous solutions of ammonium based nitrate protic ionic liquids at different temperatures (288.15?K to 303.15?K)and 101.325?kPa: A volumetric approach
Patil, Kunal R.,Shaikh, Vasim R.,Patil, Sarika K.,Dagade, Dilip H.,Patil, Kesharsingh J.
, (2019)
We report the synthesis of two protic ionic liquids (PILs)through atom–economic neutralization reaction between alkylamine (diethlyamine (DEA)and triethylamine (TEA))and nitric acid. The product ionic liquids are characterized by 1H NMR spectra. The density property of aqueous solutions of synthesized PILs, namely, diethylammonium nitrate (DEAN)and triethylammonium nitrate (TEAN)were measured in the concentration range of ~0.01 ? ~0.5 mol·kg?1for the temperature range of 288.15 K to 303.15 K and at 101.325 kPa. The measured densities were used to calculate the apparent molar volume (V?), partial molar volume of solvent (Vˉ1)and solute (Vˉ2)at all studied temperatures. The limiting apparent molar volumes (V? 0)are reported. The apparent molar expansivity (E?)of PILs at finite concentrations as well as at infinite dilutions are reported at 293.15 and 298.15 K. It is observed that water structure making effect exhibited by cations is governed by the hydration of the cations, while the overall kosmotropic effect depends upon the basicity and shape factor of the cation concerned. The hydrophobic solute–solute interactions and ion–pair formation may be influencing the deviation parameter (BV)of Debye-Hückel equation for volumes. These results are discussed.
Protic ionic liquids as catalysts for a three-component coupling/hydroarylation/dehydrogenation tandem reaction
Muntzeck, Maren,Wilhelm, René
, p. 515 - 519 (2018/06/18)
Protic ionic liquids with nitrate anions were used as solvents and catalysts for a three-component oxidative dehydrogenation tandem reaction via the coupling and hydroarylation of benzaldehyde, aniline, and phenylacetylene to a quinoline derivative. The reaction was supported by air and microwave irradiation. The presence of nitrate as counter anion in the protic ionic liquids was essential for the reaction.
Anhydrous proton exchange membranes at elevated temperatures: Effect of protic ionic liquids and crosslinker on proton conductivity
Yang, Yi,Gao, Hejun,Zheng, Liqiang
, p. 17683 - 17689 (2015/06/11)
A series of novel anhydrous proton exchange membranes (poly(vinyl alcohol)-citric acid-ionic liquid (PVA-CA-IL)) were prepared using the low cost ionic liquids ethylammonium nitrate (EAN), diethylammonium nitrate (DEAN), and triethylammonium nitrate (TEAN) as conductive fillers in PVA support membrane. The properties of the PVA-CA-IL membranes can be controlled by changing the molar ratio of the PVA, ILs and CA. The thermal stability of PVA-CA-IL membrane was measured by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC), and the microstructure was investigated using scanning electron microscopy (SEM) and the Anton-paar SAX Sess mc2 system (SAXS). The effects of temperature, ILs and crosslinker dosage on proton conductivity were also systematically investigated. The results showed that the PVA-CA-IL membranes had excellent performance. The proton conductivity of PVA-CA-EAN (mole ratio = 1:0.05:0.4) could reach up to 7.8 mS cm-1 at 140 °C. The introduction of ionic liquid into PVA membrane constituted a new and efficient kind of anhydrous proton exchange membrane. This journal is
