A Crossover Sanchez-Lacombe Equation of State Near to and Far from the Critical Region

摘要

In this research, we use the Sanchez-Lacombe(SL) equation of state and develop a crossover Lattice model near to and far from the critical region which incorporates the scaling laws asymptotically close to the critical point. It’s transformed into the classical SL equations of state far away from the critical point. And this equation of state is used to calculate thermodynamic properties of pure systems and mixture systems. We show that, over a wide range of states, the equation of state yields good results.