The solubilities of NaCl, KCl, LiCl, and LiBr in pure methanol, ethanol, acetone were measured over a temperature range from 293.15 to 333.15 K. Furthermore salt the mixed solvents (water + water acetone, methanol ethanol acetone) determined at 313.15 For few systems solubility data are reported for first time. In cases comparison with published stored Dortmund Data Bank (DDB)(1) showed disagreement. LIQUAC model was used correlate experimental data. calculated good agreement results NaCl...

Abstract In this work, CO 2 equilibrium solubility of 1M N , ‐diethylethanolamine (DEEA):2M 1,6‐hexamethyl diamine (HMDA), 1.5M DEEA:1.5M HMDA and 2M DEEA:1M was studied with a temperature range 298–333 K partial pressure 8–100 kPa. Seven thermodynamic models including Empirical model, Kent Eisenberg (KE) Hu–Chakma Austgen Helei Liu et al. Li–Shen model were developed by correlating reaction constants observed in mixed amine solvents. The evaluation those conducted terms the average absolute...

Activity coefficients at infinite dilution have been measured for 17 organic solutesalkanes, alkenes, and alkyl benzenesin the ionic liquid 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM][CF3SO3]) by gas−liquid chromatographic method with as stationary phase. The measurements were carried out from (303.15 to 363.15) K. partial molar excess enthalpies of solutes in also derived temperature dependence values.

Activity coefficients at infinite dilution of 17 polar solutes included linear and branched C1 to C5 alcohols, chlorinated methane, acetone, acetonitrile, ethyl acetate, 1,4-dioxane, cyclohexanone in the ionic liquid 1-butyl-3-methylimidazolium tetrafluoroborate were determined by gas chromatography using as stationary phase. The measurements carried out temperatures between (303.15 343.15) K. From temperature dependence limiting activity coefficients, partial molar excess enthalpies organic...

Activity coefficients at infinite dilution γi∞ have been determined for 17 organic solutes, alkanes, alkenes, and alkyl benzenes, in the ionic liquid 1-hexyl-3-methylimidazolium trifluoromethanesulfonate ([HMIM][CF3SO3]) by gas−liquid chromatographic (GLC) method with as stationary phase. The measurements were carried out temperature range of (303.15 to 363.15) K. partial molar excess enthalpies HiE,∞ also solutes from dependence values.

Activity coefficients at infinite dilution, , have been determined for 17 organic solutes, alkanes, alkenes, and alkyl benzenes, in the ionic liquid 1-propyl-2,3-dimethylimidazolium tetrafluoroborate ([PDMIM][BF4]) by gas−liquid chromatographic method with as stationary phase. The measurements were carried out temperature range of 303.15 K to 363.15 K. partial molar excess enthalpies also solutes from dependence values.

The middle range (MR) parameters of the LIQUAC model were improved as a function temperature to allow calculation activities all species in solution over wide and concentration range. New recorrelated by using experimental data osmotic coefficients, vapor−liquid equilibria (VLE), mean ion activity coefficients salt solubilities from Dortmund Data Bank (DDB). coordinates eutectics, peritectics, ice−water aqueous electrolyte systems represented with model. Standard Gibbs energies formation,...

The solubilities of 2-[(6-oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)methyl]butanedioic acid (DDP) in selected solvents were measured by a static analytic method. measurements carried out over the temperature range from 293 to 353 K methanol, ethanol, 1-propanol, tetrahydrofuran, 1,4-dioxane, ethyl acetate, toluene, benzene, and cyclohexane. Several commonly used thermodynamic models, including empirical equation Scatchard–Hildebrand, Wilson, nonrandom two-liquid, UNIQUAC equations, applied...

Abstract A generalized strong electrolyte LIQUAC model is presented to describe the vapor–liquid equilibria, osmotic coefficients, mean ion activity and solid–liquid equilibria for single‐ mixed‐solvent systems over entire concentration range from infinite dilution saturated solutions. An appropriate reference state ions was first applied test capability of in simultaneously describing coefficients solubility a salt binary solvent mixture. The influence on equilibrium behavior predicted with...

Activity coefficients at infinite dilution of pentane, hexane, heptane, octane, nonane, cyclohexane, methylcyclohexane, 2,2,4-trimethylpentane, cyclohexene, styrene, benzene, toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene in 1-decyl-3-methylimidazolium tetrafluoroborate have been determined using gas−liquid chromatography over a temperature range (303.15 to 363.15) K with the ionic liquid as stationary phase. The partial molar excess enthalpies were also for solutes from dependence...

The miscibility and mechanical properties of poly vinyl alcohol (PVA) acrylic acid (PAA)-composited membranes were studied with molecular simulation. Flory–Huggins parameters (δ) calculated to prove the good PVA PAA. radial distribution functions hydroxyl carboxyl atoms average number H-bonds observed indicate degree physical cross-linking between influences intermolecular on glass transition temperature estimated. results revealed that PVA/PAA membrane a composition 2:3 has best plastic...

To assess the salt solubilities of six alkali halides in aqueous systems, we proposed a thermodynamic cycle and an efficient molecular modeling methodology. The Gibbs free energy changes for vaporization, dissociation, dissolution were calculated using experimental data ionic properties obtained from NBS tables. Additionally, Marcus' Tissandier's solvation Li+, Na+, K+, Cl-, Br- ions compared with conventional energies by substituting into our self-consistent cycle. Furthermore, absolute...

The 2-(6-oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)-1,4-dihydroxy phenylene (ODOPB) was prepared by the addition reaction between 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and p-benzoquinone. DOPO synthesized through a multistep from o-phenylphenol phosphorus trichloride. structures thermal stability of compound were characterized infrared spectroscopy (IR), nuclear magnetic resonance (1H NMR 31P NMR), mass (MS), elemental analysis, thermogravimetric analysis (TGA). Using...

The density and viscosity of dichlorophenylphosphine sulfide (C6H5PSCl2) over a temperature range (303.16 to 423.40) K were measured. vapor pressure in the (417.83 448.12) measured by static method. data fitted second-order polynomial, Andrade equation, results Antoine equation. compared with literature values.

The virtual assembly is a technology that widely applied in the digital manufacturing field. However, production line simulation new research direction of assembly. This article focuses on topics processes chemical industry. It firstly analyzes and simplifies geometries functions equipment. Then, it summarizes designs properties device. On this basis, paper proposes method based connector balls to store information devices formulates complete series rules. feasibility has been confirmed by...

It is well known that 4,4'-hexafluoro isopropylidene-phthalic anhydride(FDA) has higher permeability and selectivity.It contributed to -CF group contained in polyimide structure material.In this study, the diffusion properties of a,w-bis(3-aminopropyldimethyl) oligodimethylsiloxane (ODMS) fragment impact on 6FDA were studied.Molecular simulation techniques Grand canonical Monte Carlo(GCMC)calculations adopted for predicting C2H5OH H2O three new polymers membranes.The membranes considered...