Energy absorbency and phase stability during NaCl solution icing

TL;DR

This study investigates the phase stability and energy absorption characteristics of NaCl solution during icing, highlighting the role of ionic polarization and molecular bonding changes in the transition from liquid to supersolid and ice phases.

Contribution

It introduces a detailed molecular-level analysis of how NaCl solvation affects phase transitions and energy dynamics during icing, emphasizing polarization effects on hydrogen bonds.

Findings

Supersolid phase forms via ionic polarization in NaCl solution.

Water absorbs energy through HO contraction during phase transition.

Polarization reduces the supersolid transition temperature to 253 K or below.

Abstract

NaCl solvation turns the fS portion molecules into the hydrating supersolid phase by ionic polarization and leaves the rest fO portion ordinary. Polarization shortens and stiffens the HO bond and does the O:H nonbond contrastingly in the supersolid. Water absorbs energy by HO cooling contraction in the quasisolid phase during the transition from Liquid to Quasisolid and then Ice The solution R drops with the fO loss till zero corresponding to 10 water molecules that saturates the solvation per solute at least. The polarization-weakening of the O H nonbonds lowers the TN to 253 K or below of the supersolid phase.