Showing papers in "Journal of Chemical & Engineering Data in 1988"

Solubility and Diffusivity of Acid Gases (CO2, N2O) in Aqueous Alkanolamine Solutions

Abstract: Solubility and diffusivity of N2O and CO2 in water were determined as a function of temperature from the results published in the open literature, and new data were measured in the present work. The solubility of N2O in several aqueous alkanolamine (DEA, DIPA, DMMEA, and DIPA) solutions at various temperatures was measured and correlated over a wide range of conditions. For both the diffusivity of N2O and the alkanolamine in aqueous alkanolamine solutions a modified Stokes-Einstein relation was derived. With the aid also of the “N2O analogy” the diffusivity of CO2 in these solutions can be estimated.

Measurement and model prediction of solubilities of pure fatty acids, pure triglycerides, and mixtures of triglycerides in supercritical carbon dioxide

Abstract: (25) Alessi, P.; Kikic, I . ; Fermeglia, M. Fluid Phase Equll. 1984, 18, 93. (9) DiAndreth, J. R.; Paulaitis, M. E., Am. Chem. SOC., Div. Fuel Chem. Pfepf. Pap. 1085, 30, 57-61. (IO) Fleck, R. N., Ph.D. Dissertation, Universlty of California, Berkeley, CA, 1967. 59-64. (11) Panagiotopoulos, A. 2.: Reid, R . C. ACS Symp. Ser. 1987, 329, 1 15-1 29. 77-88. (12) Panagiotopoulos, A. 2.: Reid, R . C. Fluid Phase Equllib. 1086, 29, 525-534. and Liquids, 3d ed.; McGraw-Hili: New York, 1977. (13) Snedeker, R . A. Ph.D. Dissertation, Princeton University, Princeton, NJ, 1955. gy, Cambridge, MA, 1988. (14) Elgin, J. C.: Weinstock, J. J. J. Chem. Eng. Data 1950, 4, 3-12. (15) Francis, A. W. J. Phys. Chem. 1954, 58, 1099-1114. (16) Shimshick, E. J. CHEMTECH 1983, 13, 374-375. (17) Panagiotopoulos, A. 2. Ph.D. Dissertation, Massachusetts Institute of Technology, Cambridge, MA, 1986. Received for review August 3, 1987. Accepted January 22, 1988. Financial (18) Wiebe, R.: Gaddy, V. L. J . Am. Chem. Soc. 1941, 63, 475-77. support for this work was provided by the National Science Foundation, under (19) Wiebe, R . Chem. Rev. 1041, 29, 475-81. Grant CPE-8318494.

Excess volumes and viscosities of binary mixtures of organics

Abstract: Etude des melanges: butanol-1/acetate d'ethyle/acetate de butyle/pixylene, ethylbenzene/ethoxy-2 ethanol, /butanone-2, acetate de butyle/hexanone-2, /acetate d'amyle

Synthesis of new acylhydrazones as iron-chelating compounds

Abstract: Preparation de 42 acylhydrazones par condensation de 14 acylhydrazides avec pyridoxal, salicylaldehyde et hydroxy-2 naphtaldehyde-1. Complexation du fer; acceleration du mouvement du fer a travers les membranes biologiques

Apparent molar heat capacity and other thermodynamic properties of aqueous potassium chloride solutions to high temperatures and pressures

Abstract: Heat capacities of KCl solutions have been measured from 413 to 573 K at 200 bar over the molality range of 0.05-3.0 mol kg/sup -1/. These were combined with literature data on volumes, heat capacities, enthalpies, and osmotic coefficients up to a temperature of 599 K and a pressure of 500 bar to yield comprehensive equations for the calculation of the thermodynamic properties of KCl(aq) to high temperatures and pressures by using ion-interaction approach of Pitzer.

Solubility of 1-hexadecanol and palmitic acid in supercritical carbon dioxide

Abstract: By use of a contlnuous flow facility, vapor-phase composltlons In supercritlcal carbon dioxide at 318, 328, and 338 K have been measured for 1-hexadecanol (CH,(CH,),,CH,OH) and palmitic acid (CH,(CH,),,COOH) for pressures of 140-416 and 140-575 bar, respectlvely. For the isothermal measurements, the mole fractlon composltlons related with the correspondlng reduced density of the supercrltlcal solvent as follows: log y 2 = A + Bp,,. The temperature-dependent parameters A and B were capable of producing compositions with average deviations of 3.4% (18 polnts) for the 1-hexadecanoi-carbon dloxlde and 9.7 % (19 points) for the palmitic acid-carbon dioxlde systems. The coupling of the Flory-Huggins theory with the three-dimensional solubility parameter of the solvent predlcts, through the Introduction of a single interaction parameter, the composltlons with average devlatlons of 11.4 % (18 points) for the 1-hexadecanol and 20.2% (19 points) for the palmitic acid binary systems.

Acoustic and thermodynamic properties of methanol from 273 to 333 K and at pressures to 280 MPa

Abstract: The speed of sound in liquid methanol has been measured at temperatures from 273 to 333 K and at pressures up to 280 MPa, using a phase comparison pulse-echo technique operating at 2 MHz. The density, the isobaric thermal expansivity, the isothermal compressibility, the entropy, the enthalpy, and the specific heat have been evaluated from the measured sound speed following a modified computational method. The derived density data were fitted to a 16-constant equation of state within the accuracy of the measurement. In the region of overlap, the experimental data agree well with those determined by direct measurement.

Vapor-liquid equilibria in the methane-diethylene glycol-water system at 298.15 and 323.15 K

Abstract: The water contents of compressed methane gas In equlllbrlum wtth water and diethylene glycol-water solutions of 0.156, 0.472, and 0.662 mole fractlon water were measured at 298.15 and 323.15 K and pressures of 3, 5, and 8 MPa. The solubllltles of methane In the diethylene glycol, water, and diethylene glycol-water solutlons were also mepsured under the same conditions of the water content measurement. The methane solublltty data were analyzed wlth the Krlchevsky-Kasarnovsky equation to obtain the Henry constant of methane In the diethylene glycol-water solutions.

Excess molar volumes of binary mixtures of diols and water

Abstract: Volumes d'exces des melanges eau-butaneiols-1,2, -1,3 et -1,4, propanediol-1,3 et pentanediol-1,5

Solubility and Partial Molar Volumes of Heavy Aromatic Hydrocarbons in Supercritical CO2

Abstract: Isothermal solubility data of naphthalene, dibenzothiophene, and mixture of naphthalene + dibenzothiophene in supercritical CO/sub 2/ were measured over a pressure range of 75-275 bar The solubility data have been used to calculate the partial molar volumes The calculated partial molar volumes of naphthalene in supercritical CO/sub 2/ have been compared with the experimental values available in the literature The calculated values are in good agreement with the experimental values available in the literature

Thermodynamics of "scale" mineral solubilities. 1. Barium sulfate(s) in water and aqueous sodium chloride

Abstract: Revue des solubilites du sulfate de Ba dans l'eau et NaCl aqueux. Tous les parametres sont exprimes en fonction de la temperature

Thermodynamics of binary mixtures containing ethers or acetals. 1. Excess enthalpies of linear ethers or acetals + heptane or + cyclohexane mixtures

Abstract: Enthalpies d'exces en fonction de la concentration, a la pression atmospherique et 298,15 K

Mutual diffusivity, thermal conductivity, and heat of transport in binary liquid mixtures of alkanes in chloroform

Abstract: Cas de l'hexane, de l'heptane, de l'octane, du methyl-3-pentane, de la dimethyl-2,3-pentane et de la trimethyl-2,2,4-pentane. Influence de la longueur de la chaine et de la ramification sur les proprietes citees

Mutual diffusion coefficients for several dilute solutes in n-octacosane and the solvent density at 371-534 K

Abstract: Determination des coefficients de diffusion a dilution infinie de trois solutes gazeux (H 2 , CO et CO 2 ) et de trois alcanes (C 8 , C 12 et C 16 ) dans le n-octacosane liquide

Physical properties of compounds used in vitamin synthesis

Abstract: Mesure de plusieurs proprietes physiques et thermodynamiques: pression de vapeur, tension de surface, capacite calorifique et conductivite thermique, pour 20 composes organiques utilises dans la synthese des vitamines A et E