Results 21 to 30 of about 671 (174)

An Evaluation of Four Electrolyte Models for the Prediction of Thermodynamic Properties of Aqueous Electrolyte Solutions [PDF]

open access: yesIranian Journal of Oil & Gas Science and Technology, 2017
In this work, the performance of four electrolyte models for prediction the osmotic and activity coefficients of different aqueous salt solutions at 298 K, atmospheric pressure and in a wide range of concentrations are evaluated. In two of these models, (
Kamalodin Momeni   +2 more
doaj   +1 more source

Boiling Point Measurement of Gamma-valerolactone/water and Gamma-valeroctone/ethanol Mixtures at Different Concentrations and Pressures

open access: yesChemical Engineering Transactions, 2019
Gamma-valerolactone (GVL) is used in green technology to produce chemicals and biofuels. Separation of GVL from mixtures within a process is a recurring challenge in chemical plants.
Valter Nunes Trindade-Junior   +3 more
doaj   +1 more source

Separation of ethylbenzene and n-octane using deep eutectic solvents

open access: yesGreen Processing and Synthesis, 2015
In this work, we have investigated the possibility of using low cost ionic liquid analogues, namely deep eutectic solvents (DESs), for the liquid-liquid extraction of ethylbenzene from n-octane.
Hadj-Kali Mohamed K.
doaj   +1 more source

Thermodynamic Properties of 1,5-Pentanediamine Adipate Dihydrate in Three Binary Solvent Systems from 278.15 K to 313.15 K

open access: yesCrystals, 2022
In this work, solubility data of 1,5-pentanediamine adipate dihydrate in binary solvent systems of water + methanol, water + ethanol and water + N,N-dimethylformamide were experimentally measured via a static gravimetric method in the temperature range ...
Liang Li   +8 more
doaj   +1 more source

Prediction of solid polycyclic aromatic hydrocarbons solubility in water, with the NRTL-PR model [PDF]

open access: yesFluid Phase Equilibria, 2014
Abstract The accurate prediction of high pressure phase equilibria is crucial for the development and the design of chemical engineering processes. Among them the modeling of complex systems, such as petroleum fluids with water, has become more and more important with the exploitation of reservoirs in extreme conditions.
Escandell, Joan   +2 more
openaire   +2 more sources

Modeling and experimental measurement of NaBr solubility in water, methanol, ethanol, 1-propanol, and its mixtures at different temperatures

open access: yesDigital Chemical Engineering, 2023
This work reports experimental data of NaBr solubility measured in water, methanol, 1-propanol, and mixed solvents water + ethanol, 1-propanol + methanol, and water + 1-propanol + methanol solvents at temperatures ranging from 283.15 K to 343.15 K.
Ana C.G. Ferrari   +2 more
doaj   +1 more source

A modified NRTL model for accurate phases equilibria: Part II: application to liquid–liquid equilibrium up to plait point

open access: yesResults in Engineering
This study presents a modified NRTL model that significantly improves the accuracy of liquid–liquid equilibrium (LLE) predictions for multicomponent systems. Unlike classical thermodynamic models, which based only on binary parameters and often fail near
Radouane Chatit   +3 more
doaj   +1 more source

Isobaric Vapor - Liquid Equilibria of Gasoline Additives Systems At 101.3 kPa [PDF]

open access: yesEngineering and Technology Journal, 2010
In this study, isobaric vapor-liquid equilibrium of gasoline additives for threeternary systems: “MTBE + Ethanol + 2-Methyl-2-propanol”, “Ethanol + 2-Methyl-2-propanol + Octane”, and “MTBE + Ethanol + Octane” at 101.3kPa arestudied.
Khalid Farhod Chasib Al-Jiboury   +1 more
doaj   +1 more source

Application of Thermodynamic Models to Predict the Solubility of Biologically Active Substances

open access: yesРазработка и регистрация лекарственных средств, 2023
Introduction. The choice of solvents for the processes of extraction of biologically active substances from natural raw materials, the processes of purification of natural and synthesized substances by extraction, crystallization and dissolution methods ...
K. S. Stepanov   +3 more
doaj   +1 more source

On the thermodynamics of electrolyte solutions

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
The basic theoretical physical chemistry elements of electrolyte solutions are presented and subject to reflection, searching for a connection between the characteristic molecular aspects and the semi empirical thermodynamic models development, suitable
Wilmar Osorio-Viana   +1 more
doaj   +1 more source

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