Viscosity of aqueous lithium chloride solution under high pressure
Nakai Takehiro; Tomoda Yoshiaki; Sawamura Seiji; Taniguchi Yoshihiro
Abstract:The viscosity of aqueous lithium chloride (LiCl) solution was measured at 0.1- 375 MPa, at 278.2 - 318.2 K, and 0.5 - 4.0 mol kg-1. The Jones Dole B coefficients for LiCl in water were obtained from the concentration dependence of the viscosity, and were divided into each ionic contribution. In the studied ranges of pressure and temperature, the B for Li+ ion decreases monotonically with increasing pressure. However, the B for Cl- ion increases with pressure up to 100 - 200 MPa. Pressure dependence of the B for alkali metal ions (Li+, Na+, K+ and Cs+) were discussed supposing that the B consists of three terms, that is, Einstein effect (BE), dielectric friction effect for solvent (BD), and structural effect of solvent (BS). Key Words:high-pressure, viscosity, lithium chloride, alkali metal ions, Jones-Dole B coefficient