Densities of aqueous solutions of lithium tetraborate in the (0.01 to 0.12) mol kg 1 concentration range at a 5 K intervals from 283.15 K to 363.15 K and 101.325 kPa were measured using a precise Anton Paar Digital vibrating-tube densimeter. Apparent molar volumes are obtained on the basis of experimental density data, and then the 3D diagram of (mi, T, V/) apparent molar volumes against temperature and molality were plotted. On the basis of Pitzer ion-interaction equation of the apparent molar volume model, the Pitzer single-salt parameters (b o0Pv M;X , b o1Pv M;X ), b o2Pv M;X and CovP M;X), and their temperature-dependence correlation F(i, p, T) = a1 + a2T + a3T2 + a4/T + a5ln(T) + a6/(T 263) + a7/(680 T) (where T is temperature in Kelvin, p is a pressure in 101.325 kPa, ai are model parameters) for Li2B4O7 are obtained, which is not reported in the literature. The deviations of the experimental and calculated values of Pitzer single-salt parameters b o0Pv M;X , b o1Pv M;X , b o2Pv M;X and CovP M;X for Li2B4O7 are all within +-0.1, and those results indicate that the single salt parameters and their relational coefficients of temperature-dependence for Li2B4O7 obtained in this work are reliable.
Compounds
#
Formula
Name
1
H2O
water
2
B4Li2O7
lithium borate
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.