Supercritical water as reaction media. Physical properties at supercritical conditions an overview

Abstract

Supercritical water is favorable medium to carry out diverse reactions, specially focusing on “green chemistry” and environmental applications. The intermolecular structure of water due to hydrogen bond, in these conditions, varies and causes changes in its properties and the properties of its solutions. In order to be able to study the behavior of these solutions, to design hydrolysis and oxidation processes, corrosion of equipment as well as the design of new experiments, is necessary to know some physical properties or water in supercritical state. The review was made to know which are the equations of correlation and interpolation more suitable and accuracy to obtain different properties of supercritical fluids, applied to supercritical water. In this paper a brief discussion, correlation equation and limits of application for the dielectric constant, viscosity and ionic product are presented.