Showing papers in "Journal of Chemical & Engineering Data in 1992"
TL;DR: In this paper, the solubility of carbon dioxide in aqueous mixtures of monoethanolamine (MEA) with methyldiethanolamine (MDEA) have been measured at 40, 60, 80, and 100 o C and at partial pressures of CO 2 between 1.0 and 2000 kPa.
Abstract: Solubility data of carbon dioxide in aqueous mixtures of monoethanolamine (MEA) with methyldiethanolamine (MDEA) have been measured at 40, 60, 80, and 100 o C and at partial pressures of carbon dioxide between 1.0 and 2000 kPa. The mixtures of alkanolamines studied are 30 wt% MDEA, 12 wt MEA+18 wt% MDEA, 24 wt% MEA+6 wt% MDEA, and 30 wt% MEA aqueous solutions. The solubility of carbon dioxide in aqueous solutions are reported as functions of partial pressures of carbon dioxide at the temperatures studied
396 citations
TL;DR: In this paper, the mutual binary solubilites have been measured for partially miscible water organic pairs at temperatures of 0-90 degrees C and showed that the solubility of the organic sepecies in the water layer usually decreases with temperature, often going through a minimum at about 60 degreesC and then increasing at higher temperatures.
Abstract: This paper reports that mutual binary solubilites have been measured for partially miscible water organic pairs at temperatures of 0-90 {degrees}C Experimental data are given for 37 ketones, 16 ethers, 14 esters, 10 chloroparaffins, and 4 nitroparaffins Data are also given for 18 ternary systems, including several gasoline systems of environmental interest In essentially all cases, the solubility of water in the organic layer increases with temperature The solubility of the organic sepecies in the water layer usually decreases with temperature, often going through a minimum at about 60 {degrees}C and then increasing at higher temperatures Ternary systems involving water-gasoline-alcohols show that methanol distributes almost entirely in the aqueous layer, but the distribution shifts more to the organic layer as the molecular weight of the alcohol increases
258 citations
TL;DR: In this paper, the applicability of the Lorenz-Lorenz, Gladstone-Dale, Wiener, Heller, and Arago-Blot refractive index mixing rules was evaluated.
Abstract: Refractive indices for the systems benzene-cyclohexane, acetone-cyclohexane have been measured at 25 o C over the composition range. These results, combined with the corresponding densities published earlier by us, were used to test the applicability of the Lorenz-Lorenz, Gladstone-Dale, Wiener, Heller, and Arago-Blot refractive index mixing rules. The Lorenz-Lorenz relation gave the best correlation for all systems investigated. The specific refractivities for mixtures studied were also calculated
155 citations
TL;DR: In this article, aqueous two-phase system composed of polyethylene glycol and various salt solutions was measured, and the densities and viscosities of these phase systems were also measured.
Abstract: hase diagrams of aqueous two-phase systems composed of polyethylene glycol and various salt solutions were measured. The densities and viscosities of these phase systems were also measured. Polyethylene glycol was used with three average molecular masses of 1000, 3350, and 8000. The salts used were magnesium sulfate, sodium sulfate, sodium carbonate, ammonium sulfate, and potassium phosthate. Phase diagram data, as well as the densities and viscosities of the phases, were measured at 25 o C
142 citations
TL;DR: In this paper, the densities and viscosities of a series of ethnolamines consisting of monoethanolamines, diethanolamine, triethanolamine, N,N-dimethylethanolamine and N-methyldiethanolamines were measured up to the normal boiling point of the liquids at atmospheric pressure.
Abstract: This paper reports the densities and viscosities of a series of ethnolamines consisting of monoethanolamine, diethanolamine, triethanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine, N-methyldiethanolamine, and N-ethyldiethanolamine. The densities and viscosities of these ethanolamines were measured up to the normal boiling point of the liquids at atmospheric pressure. The data were correlated using simple expressions and using a modified rough hard sphere model for the viscosity
137 citations
TL;DR: In this article, the authors present equilibrium measurements for hydrate three-phase (vapor-hydrate-aqueous liquid) behavior for natural gas components with high concentrations of carbon dioxide, at temperatures between the ice point and the quadruple point of each mixture.
Abstract: This work presents equilibrium measurements for hydrate three-phase (vapor-hydrate-aqueous liquid) behavior for natural gas components with high concentrations of carbon dioxide, at temperatures between the ice point and the quadruple point of each mixture. Binary hydrate phase equilibria were measured for carbon dioxide with each of the following gases: methane, ethane, propane, isobutane, and normal butane. Data for three of those binary systems (carbon dioxide+ethane, 2-methylpropane (isobutane), and butane) do not exist in the literature
89 citations
TL;DR: In this paper, the solubilities of carbon dioxide in aqueous mixtures of monoethanolamine (MEA) with N-methyldiethanolamine (MDEA) have been studied experimentally at 40, 60, 80, and 100 o C and at partial pressures of CO 2 between 1.0 and 2000 kPa.
Abstract: Equilibirium solubilities of carbon dioxide in aqueous mixtures of monoethanolamine (MEA) with N-methyldiethanolamine (MDEA) have been studied experimentally at 40, 60, 80, and 100 o C and at partial pressures of carbon dioxide between 1.0 and 2000 kPa. The systems selected for study are 6 wt% MEA+24 wt% MDEA and 18 wt% MEA+12 wt% MDEA aqueous solutions
84 citations
TL;DR: In this paper, Equillibrium phase compositions have been measured for the binary mixtures of octane plus one of three supercritical fluids: carbon dioxide, ethane, and ethylene at temperatures from 313.15 to 348.15 K over pressure ranges from the subcritical to the supercritical pressures of the solvents.
Abstract: Equllibrium phase compositions have been measured for the binary mixtures of octane plus one of three supercritical fluids: carbon dioxide, ethane, and ethylene at temperatures from 313.15 to 348.15 K over pressure ranges from the subcritical to the supercritical pressures of the solvents. Equillibrium vaporization ratios of each component were calculated on the basis of the corresponding phase compositions. The measured data were also correlated with the Soave, Patel-Teja, and Iwal-Margerum-Lu equations of state, respectively. Fair reproduction was obtained from the Patel-Teja equation
75 citations
TL;DR: In this paper, measurements and estimates of aqueous solubilities, 1-octanol-water partition coefficients (K OW ), and vapor pressures were made for 29 linear alkylbenzenes with 9-14 carbons.
Abstract: Measurements and estimates of aqueous solubilities, 1-octanol-water partition coefficients (K OW ), and vapor pressures were made for 29 linear alkylbenzenes having alkyl chin lengths of 9-14 carbons. The ranges of values observed were vapor pressures from 0.002 to 0.418 Pa, log K OW from 6.83 to 9.95, and aqueous solubilities from 4 to 38 nmol.L -1 . Measured values exhibited a relationship to both the alkyl chain length and the position of phenyl substitution on the alkyl chain
74 citations
TL;DR: In this article, a one-pass flow system was used to measure the solubilities of β-carotene (C 40 H 56 ) in dense carbon dioxide and nitrous oxide.
Abstract: A one-pass flow system was used to measured the solubilities of β-carotene (C 40 H 56 ) in dense carbon dioxide and nitrous oxide. The solubillities established at 308, 313, 318, and 323 K and pressures ranging from 9.6 to 30 MPa were correlated with the temperature and the density of pure solvent. The equation proposed by Chrstil was used for the correlation with successful results
74 citations
TL;DR: In this article, an analogy between COS and N,O with respect to gas solubility in aqueous solutions of ethylene glycol and sulfolane holds up to about 25 mass %.
Abstract: Absorption data for COS and N,O in aqueous solutlons of N-methyldiethanolamine (MDEA), ethylene glycol, and sulfolane (tetrahydrothiophene 1,l-dioxide) at 298 K and solubility data for COS in water at temperatures ranging from 298 to 338 K are presented. Also density, viscosity, N,O solubility, and N,O dlffusivity data are reported for a wide range of aqueous aikanolamine solutions, aqueous mlxtures of alkanoiamines, and solutions of MDEA in water/ethanol. It is shown that an analogy between COS and N,O with respect to gas solubility in aqueous solutions of ethylene glycol and sulfolane holds up to about 25 mass %. This seems to justify, for engineering purposes, the application of this analogy for the estimation of COS solubilitles in diluted aqueous amine solutions. Direct
verificatlon of a COS-N,O analogy was provided by absorption of N,O and COS into aqueous MDEA solutions in a laminar film reactor.
TL;DR: Excess molar volumes V E at atmospheric pressure and at 298.15 K for dimethyl carbonate+heptane, decane, 2,2,4-trimethylpentane, cycloherane, benzene, toluene, or tetrachloromethane have been calculated from densities measured with a vibrating-tube densimeter as mentioned in this paper.
Abstract: Excess molar volumes V E at atmospheric pressure and at 298.15 K for dimethyl carbonate+heptane, decane, 2,2,4-trimethylpentane, cycloherane, benzene, toluene, or tetrachloromethane have been calculated from densities measured with a vibrating-tube densimeter. The V E are positive forall the systems over the whole mole-fraction range. These results, together with previously published excess molar enthalpies H E , suggest interactions between carbonate and hydrocarbons which are stronger with aromatic hydrocarbons than with aliphatic ones
TL;DR: In this article, the exact densities ρ and viscosities η at 28815, 29815, and 30815 K were reported as functions of electrolyte concentration (1, 3, and 5 m) and amino acid (up to 05 molkg -1 ) concentrations for seven water+potassium thiocyanate + amino acid systems.
Abstract: Precise densities ρ and viscosities η at 28815, 29815, and 30815 K are reported as functions of electrolyte concentration (1, 3, and 5 m) and amino acid (up to 05 molkg -1 ) concentrations for seven water+potassium thiocyanate + amino acid (glycine, DL-alanine, L-proline, L-threonine, β-alanine, γ-aminobutyric acid, and E-aminocaproic acid) systems
TL;DR: In this article, the authors measured the changes in volume, viscosities, refractive indices, and ultrasonic velocities of binary mixtures of dimethyl sulfoxide with benzene, toluene, 1,3-dimethylbenzene and methoxybenzenes at 298.15, 303.15 and 308.15 K over the entire mole fraction scale.
Abstract: Densities, viscosities, refractive indices, and ultrasonic velocities were measures for the binary mixtures of dimethyl sulfoxide with benzene, toluene, 1,3-dimethylbenzene, 1,3,5-trimethylbenzene, and methoxybenzene at 298.15, 303.15, and 308.15 K over the entire mole fraction scale of the mixture. These results have been used to calculate the changes in volume, isentropic compressibility, and refractivity. The calculated quantities have been represented with third-degree polynomials
TL;DR: In this paper, a differential static cell was used to measure activity coefficients at infinite dilution for binary systems of water separately with methanol, ethanol, 2-propanol, tetrahydrofuran, and methanoline in cyclohexane as a function of temperature.
Abstract: A new differential static cell apparatus has been used to measure activity coefficients at infinite dilution for binary systems of water separately with methanol, ethanol, 2-propanol, tetrahydrofuran, and methanol in cyclohexane as a function of temperature, and at 15 o C, we report all binary infinite dilution activity coefficients among methanol-MTBE-cyclopentane and water-2-propanol-ethyl acetate. A description of the apparatus and experimental procedure is given, as well as an error analysis of our experimental data
TL;DR: In this paper, the Soave-Redlich-Kwong and Peng-Robinson equations of state were used to measure the solubilities of the normal paraffins hexane, decane, and dodecane.
Abstract: The solubilities of methane in the normal paraffins hexane, decane, and dodecane were measured using a static equilibrium cell over the temperature range from 311 to 423 K and pressures to 10.4 MPa. The new solubility measurements are believed to have uncertaities of 0.002 in mole fraction, and they compare favorably with available literature data. The data were analyzed using the Soave-Redlich-Kwong and Peng-Robinson equations of state. In general, the two equations represent the experimenal data well over the complete temperature range when two interaction parameters are used for each binary system
TL;DR: In this paper, the solubility of an amino acid A in a water solution of amino acid B, and B in a solution of A, has been determined in the same temperature range for four pairs of A and B.
Abstract: Solubility is measured for L-serine, D-serine, DL-proline, and DL-arginine in water at 25-60 o C. The solubility of an amino acid A in a water solution of amino acid B, and the solubility of B in a solution of A, has been determined in the same temperature range for four pairs of A and B: L-glutamic acid + glycine, L-glutamique acid + L-aspartic acid, L-glutamic acid + L-serine, and L-aspartic acid + L-serine. The eutectic compositions of the water solution of the four peirs of amino acids are reported
TL;DR: In this article, a simple measurement technique is described which utilizes a high-pressure visual cell and is believed to be inaccurate to ± 0.25 MPa in general, increasing to ±0.5 MPa at higher pressure.
Abstract: Hydrate dissociation pressures for methane or ethane contacting aqueous solutions of triethylene glycol have been measured in the temperature range 273-294 K. A simple measurement technique is described which utilizes a high-pressure visual cell and is believed to be inaccurate to ±0.25 MPa in general, increasing to ±0.5 MPa at higher pressure
TL;DR: In this paper, the experimental results, consisting of 260 solubility data for 16 binary mixtures, were used to test the applicability of four solubilities models and reported that the results show a reasonable agreement with the available literature data.
Abstract: The solubilities of CO, CO{sub 2}, H{sub 2}, CH{sub 3}OH, and H{sub 2}O were measured in hexadecane, octadecane, squalane, and benzophenone at 293-573 K and 1.013-90 bar using volume displacement and material balance techniques. The experimental results, consisting of 260 solubility data for 16 binary mixtures, were used to test the applicability of four solubility models. When using literature model parameters, the Skjold-Jorgensen group-contribution equation of state gives the best agreement with the experimental results with an average deviation of 15%. The Soave-Redlich-Kwong and Peng-Robinson equations of state give an excellent agreement with the experimental results when optimized binary interaction coefficients are used. The regular solutions theory gives reasonable results except for the methanol- and water-containing systems when using no optimized binary parameters. This paper reports that the authors' results show a reasonable agreement with the available literature data.
TL;DR: In this paper, the equilibrium distribution of divalent zinc ion between aqueous solution and macromolecular resin impregnated with phosphoric acid bis(2-ethylhexyl ester) (D2EHPA) was studied.
Abstract: Studies have been conducted on the equilibrium distribution of divalent zinc ion between aqueous solution and macromolecular resin impregnated with phosphoric acid bis(2-ethylhexyl ester) (D2EHPA). The mechanism of Zn(II) sorption on the impregnated sorbent is different from that for the solvent extraction, being expressed by a simple ion-exchange reaction, being expressed by a simple ion-exchange reaction, with the equilibrium constant of 0.036 kg of sorbent/dm 3
TL;DR: Excess volumes of mixing were measured at 20 o C for mixtures of three linear alkanes (hexane, heptane, and octane) and cyclohexane with five alkyl acetates (methyl, ethyl, propyl, butyl, and amyl acetates) and two ketones (acetone and 2-butanone).
Abstract: Excess volumes of mixing were measured at 20 o C for mixtures of three linear alkanes (hexane, heptane, and octane) and cyclohexane with five alkyl acetates (methyl, ethyl, propyl, butyl, and amyl acetates) and two ketones (acetone and 2-butanone). The whole composition range was studied for all 28 binary systems. For a given alkane, the excess volume decreases with the increasing size of the carbonyl compound. For a given carbonyl compound, the excess volume increases with the size of the alkane
TL;DR: In this article, new measurements were presented for the viscosity of liquid toluene at temperatures from 25 to 150 degrees C and at pressures up to 30 MPa. But the measurements were obtained with an oscillating-disk viscometer and have an estimated accuracy of {plus minus}0.5%.
Abstract: In this paper, new measurements are presented for the viscosity of liquid toluene at temperatures from 25 to 150{degrees} C and at pressures up to 30 MPa. The measurements were obtained with an oscillating-disk viscometer and have an estimated accuracy of {plus minus}0.5%. a comparison with data reported by other researchers is included, and an equation for the viscosity of liquid toluene as a function of temperature and density is given. Toluene was chosen because of its usefulness as a primary reference standard substance for thermal conductivity of liquids and its potential use as a similar standard for viscosity.
TL;DR: In this article, a relative transient hot-wire technique was used to measure the liquid thermal conductivity of seven ethanolamines at temperatures from 298 to 470 K with an estimated accuracy of ± 2%.
Abstract: A relative transient hot-wire technique was used to measure the liquid thermal conductivity of seven ethanolamines. Data are reported at temperatures from 298 to 470 K with an estimated accuracy of ±2%. The data were correlated with a modified hard sphere model within the accuracy of the measurements
TL;DR: In this article, the interaction parameter obtained from the Grundberg and Nissan equation, the deviation in viscosity (Δη), and excess volume (V E ) are discussed.
Abstract: Viscosities and densities for propylene carbonate+toluene have been measured at 15, 20, 25, 30 and 35 o C. The «interaction parameter» obtained from the Grundberg and Nissan equation,the deviation in viscosity (Δη), and excess volume (V E ) are discussed
TL;DR: In this article, a simple equation is given for the estimation of the interfacial tensions with equilibrium compositions from binary data alone, which is the same equation used in this paper. But this equation is not applicable to the case of aqueous ternary systems.
Abstract: Interfacial tensions of seven aqueous ternary systems containing propionic acid, 1-propanol, or 2-propanol as solute were measured at 25{degrees} C with a DuNouy ring interfacial tensiometer. In this paper a simple equation is given for the estimation of the interfacial tensions with equilibrium compositions from binary data alone.
TL;DR: In this article, equilibrium constants for liquid-phase synthesis of methyl tert-butyl ether (MTBE) were determined experimentally in the temperature range 40-80 o C. The experimental equilibrium constant is given as a function of temperature, and enthalpy, free energy, and entropy changes have been determined as well.
Abstract: Equilibrium constants for the liquid-phase synthesis of methyl tert-butyl ether (MTBE) were determined experimentally in the temperature range 40-80 o C. Equilibrium was established in the methanol addition to isobutylene for obtaining MTBE over the sulfonic acid resin Lewatit SPC 118 as the catalyst in a batch reactor maintained at 1.6 MPa. The experimental equilibrium constant is given as a function of temperature, and enthalpy, free energy, and entropy changes have been determined as well
TL;DR: In this paper, the densities of 1,2-butanediol, 1,3-butane, 1.4-and 2,3butane were measured at atmospheric pressure and at temperature ranging from 293 to 463 K with and accuracy of ± 0.2%.
Abstract: The densities of 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, and 2,3-butanediol were measured at atmospheric pressure and at temperature ranging from 293 to 463 K with and accuracy of ±0.2%. Viscosities of the same butanediols were measured between 293 and 423 K with an estimated accuracy of ±1%. The low-temperature results for both density and viscosity were found to be in good agreement with data reported in the literature
TL;DR: In this paper, the feasibility of using N, N-diethylmethylamine (DEMA) for extractive crystallization of sodium chloride or sodium sulfate was investigated.
Abstract: Liquid-liquid equilibria were measured to study the feasibility of using N, N-diethylmethylamine (DEMA) for extractive crystallization of sodium chloride or sodium sulfate. This paper reports that the experimental results show that DEMA selectively extracts water from saturated sodium chloride solution at low temperatures (5-10{degrees} C), causing sodium chloride crystals to precipitate. DEMA also selectively extracts water from saturated sodium sulfate solution at moderate temperature (21-25{degrees} C), precipitating sodium sulfate decahydrate.
TL;DR: In this paper, the characteristic coefficients of ions in Neosepta and Selemion cation exchange membranes were measured and compared with those of Nafion Cation Exchange membranes obtained previously.
Abstract: The characteristic coefficients of ions in Neosepta and Selemion cation exchange membranes were measured and compared with those of Nafion cation exchange membranes obtained previously. It was found that the exchange affinities of the cation exchange membranes used were represented as H +
TL;DR: The densities of 1,4-dioxane+water were measured over the whole composition range at 5, 15, 25, 35, and 45 o C as discussed by the authors.
Abstract: The densities of 1,4-dioxane+water were measured over the whole composition range at 5, 15, 25, 35, and 45 o C. The apparent and partial molar volumes and partial molar thermal expansions were evaluated for both components. Characteristic extrema were observed in the plots of partialmolar quantities against composition for dioxane in the aqueous-rich region and for water in the dioxane-rich region