Determination of Vapor-Liquid Equilibrium from Boiling Point Curve

Liquid - Vapor Equilibrium/Distillation

Background The volatility of a compound is its ability to change into a vapor, or to evaporate at a particular temperature and pressure. The normal boiling point of a liquid usually allows comparison of its volatility to other materials, with lower boiling points indicating greater volatility, but this may be affected somewhat by the presence of other materials. Comparison of the concentration ...

Determination and Prediction of the Isobaric Vapor-liquid-liquid Equilibrium Data

The prediction method of the isobaric vapor-liquid-liquid equilibria (VLLE) data for the system ethanol-water-1-butanol and ethanol-2-butanol-water was studied. The parameters for the activity coefficients models were determined from the constituent binary VLE data. With the parameters, the isobaric ternary VLLE data were predicted and compared with the experimental ones obtained in our previou...

Correlation of Liquid Viscosity at the Normal Boiling Point

The importance of liquid viscosity in chemical process design makes it one of the most measured transport properties. Nevertheless, of the 1893 compounds in the DIPPR 801 pure-component database, liquid viscosity and its temperature dependence (at 1 atm, or 0.1 MPa) have been predicted for nearly 50% of the compounds because no experimental data are available. Unfortunately, prediction methods ...

COMMENTS Comment on: Mokcular simulation of water along the liquid-vapor coexistence curve from 25 “C to the critical point

In an earlier paper’ [hereafter referred to as I], de Pablo et al. reported Gibbs ensemble Monte Carlo (GEMC) simulations of SPC water with long-range intermolecular interactions computed using the Ewald summation method. The coexistence curve of SPC water was obtained from 25 to 300 “C. At each temperature simulated, the liquid densities obtained in the simulation were consistently lower than ...

Gibbs ensemble simulation of liquid-vapor equilibrium in quantum neon