Molecular diffusion coefficients of phenylmethanol, 1-phenylethanol, 2-phenylethanol, 2-phenyl-1-propanol, and 3-phenyl-1-propanol in supercritical carbon dioxide

Diffusion coefficients of phenylbutazone in supercritical CO2 and in ethanol

“…Although the Eq. (3) is in excellent agreement with the D 12 data in the higher pressure region, which also can be seen in literature [24,[26][27][28][29], there is a significant deviation from the experimental data in the lower pressure region at each constant temperature. method in this study.…”

Correlation of Infinite-Dilution Diffusion Coefficients in Supercritical Fluids

“…As presented in Table 1, we collected the experimental data of infinite-dilution diffusion coefficients in supercritical fluids available in the literature, including 153 binary systems and 1968 data points, over the solvent reduced temperature range of 1.00-1.78, the solvent reduced density range of 0.21-2.34, the solute molar mass range of 58.08-885.40 g/mol, and the solute ambient-temperature density range of 0.63-2.04 g/cm 3 16 allylbenzene, 9 aniline, 17 benzaldehyde, 15 benzene, 13-15,18-24 benzoic acid, 5,16 benzyl acetate, 25 benzyl ether, 15 benzylacetone, 26 2-bromoanisole, 9 bromobenzene, 2,6 2-butanone, 15 (C4:0; C8:0; C10:0; C14:0; C16:0; C18:0; C22:0; C22:6 a ) ethyl ester, 27 (C14:1; C18:2; C20:1; C20:5; C22:1; C22:6 a ) methyl ester, 20,27,28 caffeine, 29,30 chlorobenzene, 2,6 chloroform, 15 chrysene, 13 cis-jasmone, 20 cycloheptanone, 31 cyclononanone, 31 cyclopentanone, 31 dibenzyl ether, 25 1,2-dichlorobenzene, 32 dichloromethane, 15 1,2-diethylbenzene, 33 1,4-diethylbenzene, 33 diethyl ether, 15,34 diisopropyl ether, 34 2,3-dimethylaniline, 35 2,6-dimethylaniline, 35 1,4-dioxane, 15 1,3-divinylbenzene, 9 ethyl acetate, 15,29 ethyl benzoate, 26 ethylbenzene, 15,19 2-ethyltoluene, 36 3-ethyltoluene, 36 4-ethyltoluene, 36 eugenol, 26 2-fluoroanisole, 9 fluorobenzene, 6 glycerol trioleate, 5 3-heptanone, 31 hexachlorobenzene, 37 indole, 20 iodobenzene, 2,6 isopropylbenzene, 15,19 limonene, 15,20 m-cresol, 22 m-xylene, 2,15 mesitylene, 2,13,15,17,18 2-methylanisole, 35 4-methylanisole, 35 n-butylbenzene, 7 n-decane, 14 n-dodecane, 14 n-heptane, 14 n-hexane, 14 n-nonane, 14 n-octane, 14 n-pentane, 14 n-pentylbenzene, 7 n-propylbenzene, 15,18,19 n-tetradecane, 14 n-undecane, 14 naphthalene, 5,13,20,24,30,37-41 2-nitroanisole, 32 nitrobenzene, 2 3-nitrotoluene, 35 5-nonanone, 31 o-xylene, 2,15 1-octene, 15 oleic acid, 5 p-xylene, 2,15 3-pentanone, 31 phenanthrene, 13,16,37 phenol, 29 2-phenyl-1-propanol, 8 3-phenyl-1-propanol, …”

“…[1][2][3][4][5] In general, such experimental apparatus is relatively expensive and the experimental procedure is always time-consuming and difficult to measure with high precision. Therefore, more than 20 famous equations have been proposed to estimate the infinite-dilution diffusion coefficients in supercritical fluids, [6][7][8][9] which can be roughly classified into two groups: Stokes-Einstein type and rough-hard-sphere type. Among them, the He-Yu equation 10 is highly recommended for its accuracy, generality, convenience, and simplicity.…”

“…During the past three decades, mainly through the Taylor−Aris chromatographic dispersion technique, thousands of data points of infinite-dilution diffusion coefficients in supercritical fluids have been measured and published. − In general, such experimental apparatus is relatively expensive and the experimental procedure is always time-consuming and difficult to measure with high precision. Therefore, more than 20 famous equations have been proposed to estimate the infinite-dilution diffusion coefficients in supercritical fluids, − which can be roughly classified into two groups: Stokes−Einstein type and rough-hard-sphere type. Among them, the He−Yu equation is highly recommended for its accuracy, generality, convenience, and simplicity .…”

Diffusion Coefficients of Isobutylbenzene, sec-Butylbenzene, and 3-Methylbutylbenzene in Supercritical Carbon Dioxide

“…The binary diffusion coefficients for several benzene derivatives have been measured over two decades by using the chromatographic peak-broadening technique or Taylor dispersion method. − The method is suitable for measuring diffusivities for non and weakly polar compounds. In previous works, we have studied the effect of the alkyl group position on the diffusion of isomers such as 1,2-diethylbenzene and 1,4-diethylbenzene, 1-phenylethanol, 2-phenylethanol, 2-phenyl-1-propanol, and 3-phenyl-1-propanol, 2,3-dimethylaniline, 2,6-dimethylaniline, 2-methylanisole, and 4-methylanisole and 2-ethyltoluene, 3-ethyltoluene, and 4-ethyltoluene . In this paper, the three chemically similar compounds isobutylbenzene, sec -butylbenzene, and 3-methylbutylbenzene (isopentylbenzene) were selected and their binary diffusion coefficients in supercritical carbon dioxide were determined over a wide range of pressures and temperatures.…”