Thermodynamic properties of water–aliphatic alcohol systems in a wide range of parameters

The results of thermal and thermodynamic (phase diagram) property calculations of water–aliphatic alcohol (methanol, ethanol, n-propanol) systems in liquid and vapor phases, as well as supercritical fluid water–methanol systems have been presented. The calculations are based on the polynomial equation of state, represented by expansion of the compressibility factor into a power series of reduced density (ω = ρ/ρ_cr and reduced temperature (τ = T/T _cr)

$$Z = \frac{p}{{RT{\rho _m}}} = 1 + \sum\limits_{i = 1}^m {\sum\limits_{j = 0}^{{n_i}} {\frac{{{a_{ij}}{\omega ^i}}}{{{\tau ^j}}}} } $$

, which describes experimental p,ρ,T,x-dependencies with an average relative error of 1.2%.

     

Formation of Microstructure of Lithium-Titanium Ferrite during its Synthesis in a 2.4 MeV Electron Beam

Russian Physics Journal -     

p, ρ, T,and x dependences for supercritical water-aliphatic alcohol mixtures

The p, ρ, T, and x relationships for water + aliphatic alcohol (methanol, ethanol, n-propanol) mixtures in near-critical and supercritical conditions obtained by compressibility measurements using the piezometric setup are analyzed. It is shown that the thermodynamic surface (p, ρ, T) _x or (Z, ρ, T) _x in the supercritical region can be satisfactorily described (average relative error 0.83%) by the equation of state in the form of polynomial decomposition of compressibility factor Z = p/(RT) to the series of degrees of density and temperature:      

The Effect of Plasticizers and Moisture on the Pressing Process and the Properties of Ceramic Products Based on Zirconium Dioxide

Russian Physics Journal -