Solubility Of LiCl Research Articles

Dissolution of Cellulose in [Amim]Cl/Lithium Salts Solvents System

Lithium salts were dissolved in ionic liquid [Amim]Cl, and their dissolution behavior were tested by turbidimeter. It is found that the solubility of LiCl in [Amim]Cl is up to 14g/100g [Amim]Cl at 70°C, and it keeps growing as the temperature increase. Turbidity of cellulose solution in [Amim]Cl at 70°C was obtained, but the solubility of high concentration cellulose solution could not be demonstrated accurately in this way. Cellulose solutions with [Amim]Cl or [Amim]Cl/lithium salts as solvents at different temperature were obtained, in which the lithium salts were 1wt%(mass fraction of [Amim]Cl), polarization microscope was used to observe the dissolution behavior of cellulose. The solubility of cellulose would increased as temperature rose, and the solubility of cellulose in [Amim]Cl/1wt%LiCl reached 11.9%(mass fraction of [Amim]Cl) at 80°C, which was higher than in [Amim]Cl 9.4% at 80°C. It is found that the addition of lithium salts into [Amim]Cl can really improve the solubility of cellulose than in [Amim]Cl.

Liquid-liquid transition in supercooled water investigated by interaction with LiCl and Xe

The hypothesis that supercooled water consists of two distinct liquid phases has been explored on the basis of their ability to hydrate nonpolar (Xe) and electrolytic (LiCl) species. Xe incorporated in the bulk of amorphous solid water survives in the deeply supercooled regime above the glass-transition temperature of 136 K and is finally dehydrated at 165 K, whereas LiCl dissolves only in the liquid phase appearing above 165 K. The second liquid phase connects with normal water as inferred from high (poor) solubility of LiCl (Xe). This result also suggests that decoupling of translational diffusion and viscosity in the deeply supercooled regime is caused by domain structures of the two liquid phases formed during a possible liquid-liquid transition.

Evidence of Deeply Supercooled Liquid Water in Interaction with LiCl

The properties of water above the glass transition temperature are highly controversial. By using time-of-flight secondary ion mass spectrometry (TOF-SIMS), the presence of deeply supercooled water is manifested by dissolution of LiCl in the pure amorphous water films heated at 140-155 K and the formation of aqueous LiCl solutions. Two phases of deeply supercooled water, that lead to the dilute and concentrated LiCl solutions, are clearly identified. The former is short-lived and merges into the latter, whereas the latter is basically identical to normal liquid water as far as the solubility of LiCl is concerned.

Preparation and Characterization of New Room Temperature Ionic Liquids

A new series [C(n)O(m )mim][X] of imidazolium cation-based room temperature ionic liquids (RTILs), with ether and alcohol functional groups on the alkyl side-chain has been prepared. Some physical properties of these RTILs were measured, namely solubility in common solvents, viscosity and density. The solubility of LiCl, HgCl(2) and LaCl(3) in room temperature ionic liquids was also determined. The features of the solid-liquid phase transition were analysed, namely the glass transition temperature and the heat capacity jump associated with the transition from the non-equilibrium glass to the metastable supercooled liquid. These properties were compared with those reported for the 1-n-alkyl-3-methylimidazolium [C(n )mim][X] series. While the density and solid-liquid phase transition properties are similar for both series, the new RTILs present a considerably lower viscosity and an increased ability to dissolve HgCl(2) and LaCl(3) (up to 16 times higher).

The solubility of lithium chloride in 1.8M lithium tetrachloroaluminate in thionyl chloride

The solubility of LiCl in a 1.8M solution of LiAlCl 4 in SOCl 2 has been determined by a variety of methods. The solubility is discussed in relation to the morphology of the LiCl passivating layer on Li metal.

Electrical conductivity, self-diffusion and phase diagram of lithium sulphate - lithium chloride and lithium sulphate - lithium bromide

The phase diagram of Li 2SO 4LiCl has been determined by means of differential thermal analysis, DTA. The electrical conductivity has been measure for 2.5 to 33.3 mol% Li 2Cl 2, and a pronounced change is obtained at 575°C, i.e. the temperature of the monoclinic-cubic transition of Li 2SO 4. The self-diffusion coefiicient is approximaately one order of magnitude larger for lithium ions than for chloride ions. The system is a simple eutectic with the eutectic point at 484°C and 44 mo1% Li 2Cl 2. The solubility of LiCl in Li 2SO 4 is very small, but a plastic paste is formed in the two-phase regions. This makes mixtures with a low content of LiCl of interest both as electrolytes in power sources and for the storage of thermal energy in the vicinity of the solid-solid phase transition at 575°C. The system Li 2SO 4LiBr has been studied regarding electrical conductivity as well as the diffusion of lithium and bromide ions, and it is evident that the two sulphate-halide systems are very similar.

Solubility in the systems AlCl3-LiCl-ether, AlCl3-LiCl-toluene, and AlBr3-NaBr-toluene at 25�c

1. The systems AlCl3-LiCl-ether, AlCl3-LiCl-toluene, and AlBr3-NaBr-toluene were investigated at 25° by the method of construction of the solubility isotherms, study of the electric conductivity of saturated solutions, and x-ray diffraction study of the crystallizing phases. 2. All three systems are characterized by a substantial increase in the solubility of the alkali halide when aluminum halide is added. The maximum solubility of LiCl in ether is 7.15% in the presence of 32.7% AlCl3, and in toluene 5.72% LiCl in the presence of 35.1% AlC13. The solubility of NaBr in toluene reaches 11.2% NaBr in the presence of 72.0% AlBr3. 3. The composition 2AlBr3 · C6H5CH3 for compounds in the binary system AlBr3-toluene was confirmed by the method of construction of the solubility isotherms of the ternary system AlBr3-NaBr-toluene.

Etude de l'electrode de deuxieme espece LiCl/Li dans le carbonate de propylene

The behaviour of the LiCl/Li electrode of the second kind has been studied in propylene carbonate with tetrabutylammonium chloride as supporting electrolyte. The solubility of LiCl is approximately 0.03 mol/l, and the solubility of NBut 4Cl is > 3 mol/l. The LiCl/Li electrode is reversible and its equilibrium potential is −2740 mV vs the AgCl/Ag reference electrode (calculated value −2830 mV). By addition of NBut 4ClO 4, the limiting anodic cd reaches 6 mA/cm 2, which can be maintained for 50 min without passivation.

Studies in qualitative inorganic analysis. VII

Two methods are described for the separation of the alkali metals and magnesium. In the first method magnesium is separated from the other metals by precipitation as MgCO3 · (NH4)2CO3 in an ethanolic medium and is detected with Titan Yellow. Lithium is separated from sodium and potassium by virtue of the solubility of LiCl in a di-ethylether/ethanol medium, and is detected by means of potassium periodate. Sodium is detected by formation of the triple acetate with copper uranyl acetate reagent. Potassium is detected by the formation of insoluble potassium cobaltinitrite. In the second method, potassium is tested for separately on the sodium carbonate extract prepared for anion tests. Magnesium is separated as in method 1 and lithium and sodium are tested for after partial removal of the ethanol. The first method has the advantage of using successive separations but the second method is to be preferred on the grounds of speed and is recommended.