Phase equilibria and thermophysical properties of dibromomethane: Measurement and correlation studies

摘要

Halomethane (Dibromomethane) saturated vapor pressure was measured at the isobaric condition from 11.48-94.79 kPa using a Swietoslawski-type ebulliometer and well correlated with Antoine and Clark-Glew equations. The correlation parameters also indude 15 other saturated vapor pressure data reported in the literature. Clarke-Glow parameters exhibited the lowest standard deviation of 0235 within a temperature range of 293.15-370.37 K. The average enthalpy of vaporization was found to be constant (35.90 KJ.mol(-1)) for the investigated experimental work. Y. Nannoolal et at group contribution method was able to predict the saturated vapor pressure data with an average absolute deviation of 0.606. The estimated critical pressure showed a significant deviation among the well-known group contribution methods. The critical molar volume was found to be in the range of 215-231 cm(3)mol(-1) while the critical temperature is found 601.27 K. The acentric factor-based Ambrose-Walton Corresponding states is found to be 0339. Density is also measured and correlated with a function of temperature (288.15-359.15 K). The critical parameters (based on different methods) with the Rackett equation were used to predict density and among them, Nannoolal parameters were able to predict the density with the lowest RAD of 0.05126 x 10(-2). The reported viscosity measurement was correlated with Vogel -Tamman-Fulcher equation (273.15-353.15 K) and all the investigated group contribution fails to predict the transport properties. (C) 2020 Elsevier B.V. All rights reserved.