SANG Shihua, ZHANG Tingting, FU Chao, et al. Phase equilibria in quaternary system Li+, K+, Mg2+//B4O72--H2O at 273 K[J]. CIESC Journal, 2017, (9): 3343-3349. DOI: 10.11949/j.issn.0438-1157.20161812.
SANG Shihua, ZHANG Tingting, FU Chao, et al. Phase equilibria in quaternary system Li+, K+, Mg2+//B4O72--H2O at 273 K[J]. CIESC Journal, 2017, (9): 3343-3349. DOI: 10.11949/j.issn.0438-1157.20161812.DOI:
The stable phase equilibria of the quaternary system Li+
K+
Mg2+//B4O72--H2O at 273 K were studied using isothermal solubility equilibrium method. The solubility of the salts and densities in the system were determined
respectively. According to the experimental data and the corresponding equilibrium solid phase
the isothermal solubility diagram
water content diagram about the system Li+
K+
Mg2+//B4O72--H2O at 273 K and the corresponding density composition diagram were plotted
respectively. Experimental results show that there are no complex salt or solid solution
and the system belongs to a simple eutectic type. The phase diagram is constituted by an invariant point
three univariant solubility curves and three solid phase crystalline regions. The three solid phases crystalline regions correspond to Li2B4O7·3H2O
K2B4O7·4H2O and MgB4O7·9H2O. In addition
the density of saturated solution reached maximum at invariant point. Finally
a comparative analysis and discussion have been made in this paper for the stable phase diagrams of the system at 273 K