Estimation of reference state parameters for sorption modeling of gaseous substances

This paper presents a new state equation elaborated for sorption modeling. A method for reference state parameters estimation is discussed. By using a thermodynamic approach, energy and entropy of the gas are studied separately for wide range of pressures and temperatures, especially in critical or phase transition regions. The work is focused on compression factor formula and estimation of the cohesion energy in the wide range of pressures and temperatures.