Phase Equilibria in the System LiOH-H2O at 350-425 degrees C

摘要

The system LiOH-H2O is characterized by immiscibility phenomena both in equilibrium with vapor and solid saturated solutions or without the solid phase. The solubility of LiOH increases as a result of immiscibility phenomena at similar to 355 degrees C and further increases above this temperature up to the melting point. The immiscibility region (g-l(1)-l(2)) is terminated by the critical phenomena (g = l(1)-l(2)) at similar to 390 degrees C. A separation of liquid phases is observed at elevated pressures (at similar to 39 MPa) and temperatures up to 425 degrees C.