Showing papers in "Journal of Chemical & Engineering Data in 1985"

Solubility of hydrogen in 10 organic solvents at 298.15, 323.15, and 373.15 K

Abstract: (1) Tanaka, R. J. Chem. Thermosyn. 1982, 14, 259. (2) Tanaka, R.; Takenaka, M.; Murakaml, S. J . Chem. Eng. Data 1984, 29, 69. (3) Takenaka, M.; Tanaka, R.; Murakaml, S. J . Chem. Thermodyn. 1980, 12. 849. (4) Kallnowska, B.; Jedllhska, J.; Woyclchl, W.; Steckl, J. J . Chem. 77?errrwdyn. 1980, 12, 891. (5) Drelsbach, R. R. “Physlcal Properties of Chemical Compounds”; American Chemical Soclety: Washington. DC, 1959; Vol. 11. (6) Fortier, J.-L.; Benson. G. C.; Plcker, P. J. Chem. Thermodyn. 1978, 8 , 289. (7) Bondl, A. Ind. Eng. Chem. Fundam. 1988. 5, 443. (8) Holzhauer, J. K.; Zlegler, W. T. J. Phys. Chem. 1975, 79, 590. (9) “Landoit-Bn Springer-Verlag: Berlin, 1961; Vol. 11, Chapter 4, pp 264-72.

Liquid-liquid-vapor immiscibility limits in carbon dioxide + n-paraffin mixtures

Abstract: Liquid-liquid-vapor equilibria for the binary systems CO/sub 2/ + n-nonadecane and CO/sub 2/ + n-henelcosane were studied. Liquid-liquid-vapor data on the binary mixture CO + n-elcosane were also taken and compared with an earlier study in the literature. For the homologous series of n-paraffins it appears that the extent of the liquid-liquid-vapor immiscibility decreases from a maximum at carbon number 14 to carbon number 21. The liquid-liquid-vapor locus has a length of about 3.0 K for CO/sub 2/ + n-henelcosane and is nonexistent for carbon number 22 and higher. Also studied were solid-liquid-vapor equilibria for CO/sub 2/ + n-nonadecane and CO/sub 2/ + n-heneicosane and liquid-vapor isotherms for CO/sub 2/ + n-nonadecane at 40 and 60 /sup 0/C and CO/sub 2/ + n-heneicosane at 45 and 65 /sup 0/C.

Solubilities of carbon dioxide in heavy normal paraffins (C20−C44) at pressures to 9.6 MPa and temperatures from 323 to 423 K

Abstract: Solubility data have been obtained for carbon dioxide in the heavy normal paraffin solvents n-elcosane, n-octacosane, n-hexatricontane, and n-tetratetracontane. Measurements were made over the temperature range from 323 to 423 K (122 to 302/sup 0/F) at pressures up to 9.6 MPa (1400 psia). At carbon dioxide mole fractions below 0.45, the solubility data are described by the Krichevsky-Kasarnovsky equation with average deviations of 0.002 in mole fraction.

Densities, molar volumes, and cubic expansion coefficients of 78 aliphatic ethers

Abstract: DenSnles of 78 allphatlc ethers were measured at 288.15, 298.15, and 308.15 K by the use of a Llpkln-Davlson type pycnometer. Molar volumes at these temperatures and cublc expansion coefflclents at 298 K were derlved from the experlmental data. For some homologous serles of ethers, molar volumes were expressed as a functlon of the number of carbon atoms In the alkyl groups. Wlthln any serles of lsomerlc compounds, an ether contalnlng dlfferent klnds of n-alkyls always has a smaller molar volume than the symmetric ether that has the same alkyl In the molecule, and as the dlfference between the numbers of carbon atoms In the two alkyls Increases their molar volumes decrease. On the other hand, chaln branching8 of alkyls result In an Increase of the molar volume. Throughout a homologous serles of ethers havlng one of the alkyl groups In common, cublc expanslon coefflclents of the ethers decrease as the number of carbon atoms In the other alkyl groups Increases. Wlthln a group of lsomerlc compounds, however, the cublc expansion coeff lclents Increase almost linearly with an Increase In the molar volumes. For both homologous and lsomerlc serles of compounds, the cubic expansion coefflclents were correlated with their molar volumes.

Densities, viscosities, and diffusivities in aqueous sodium hydroxide-potassium ferri- and ferro-cyanide solutions

Abstract: operating under limiting conditions (current independent of cathode potential), so that the cathode reaction becomes diffusion controlled ( 7 , 2 ) . When one correlates and generalizes such mass-transfer information, accurate values of the density and viscosity of the solution as well as the diffusivity of the ferricyanide ion are required. Values recently determined in this laboratory are communicated here and refer to the following conditions: (a) Concentrations of potassium ferriand ferrocyanides were 10 and 20 mol m-3, respectively. (The higher ferrocyanide concentration gives some protection against its anodic oxidation and, together with a larger anode than cathode area, causes the cathodic processes to become rate determining). (b) To suppress mass transfer by ionic migration, 500-3000 mol m-3 of NaOH was added as indifferent electrolyte. (c) Temperature was varied in the range 288-308 K. This variation coupled with the wide range of NaOH concentrations permitted a range of Sc from 873 to 6279 to be obtained.

Solubility of solid aromatic isomers in carbon dioxide

Abstract: The sduMilty of a family of disubstituted aromatlc isomers, the hydroxybenzolc aclds, was measured In supercritical carbon dioxide at 373 K over a pressure range of 200-400 bar; the solubility of another family, the dihydroxybenzenes, was measured at 328 K and at one pressure, 310 bar. The solubility wlthln a family was found to be a functlon of the meitlng polnt of the isomer, the lower the melting polnt, the higher the soiublilty. The results suggest that supercritlcal solvents can be used to separate certain ortho and para Isomers.

Molar excess volumes of ternary mixtures of nonelectrolytes at 308.15 K

Abstract: Etude des melanges CH 2 Br 2 +pyridine+β-picoline, pyridine+β-picoline+cyclohexane, benzene+toluene+dichloroethane, benzene+o-xylene+dichloroethane, benzene+p-xylene+dichloroethane

Thermodynamic and transport properties of O-chlorophenol with aniline and N-alkylanilines

Abstract: Mesures des densites et viscosite a 5 temperatures. On en deduit les volumes d'exces, viscosites d'exces, volumes molaires partiels et volumes molaires partiels d'exces

Excess enthalpies of 1-heptanol + n-alkane and di-n-propylamine + normal alcohol mixtures at 298.15 K

Abstract: Mesure des enthalpies en fonction de la fraction molaire. Les melanges sont endothermiques, les valeurs de l'enthalpie augmentent avec la longueur de la chaine de l'alcane

Low-volatility polar organic solvents for sulfur dioxide, hydrogen sulfide, and carbonyl sulfide

Abstract: The solubility of SO/sub 2/, H/sub 2/S, and COS in several phosphoric and phthalic acid esters, poly(ethylene glycols), and poly(ethylene glycol) dialkyl ethers was measured at temperatures between 20 and 100/sup 0/C and pressures between 0.01 and 1 bar. Henry's and equilibrium constants were determined from experimental solubility data as a function of temperature. Furthermore, selection criteria for the tested organic liquids, like viscosity and vapor pressure data, are also reported.

Thermodynamics of aqueous magnesium and calcium bicarbonates and mixtures with chloride

Abstract: The potential for the cell Pt,H/sub 2/,CO/sub 2/exclamationM(HCO/sub 3/)/sub 2/,MCI/sub 2/,CO/sub 2/(aq)exclamationAgCl,Ag with M = Mg and Ca was measured over a wide range of molalities at 298.15 K. The data were interpreted by the mixed-electrolyte equations of Pitzer and Kim to yield the ion-interaction parameters for Mg/sup 2 +/, HCO/sub 3//sup -/, and for Ca/sup 2 +/, HCO/sub 3//sup -/. The trace activity coefficients of M(HCO/sub 3/)/sub 2/ in MCI/sub 2/ and in NaCl are calculated.