2
0
2009
piz
sua
1
journal
Original
Pizarro, C.[Consuelo]
Suarez-Iglesias, O.[Octavio]
Medina, I.[Ignacio]
Bueno, J. L.[Julio L.]
J. Chem. Eng. Data
2009
2020-09-29
Binary Diffusion Coefficients of 2-Ethyltoluene, 3-Ethyltoluene, and 4-Ethyltoluene in Supercritical Carbon Dioxide
The binary diffusion coefficients of 2-ethyltoluene, 3-ethyltoluene, and 4-ethyltoluene in supercritical carbon dioxide were determined in a pressure range of (15.0 to 35.0) MPa at temperatures of (313, 323, and 333) K by means of the Taylor-Aris dispersion technique. The influence of pressure, temperature, density, and viscosity on the binary diffusion coefficients was examined, and some general trends were established. The experimental results were compared with the values estimated by several semiempirical equations based on the Stokes-Einstein formula and on the Rough-Hard-Sphere model.
10.1021/je800738n
5
54
1467-1471
1
InChI=1S/CO2/c2-1-3
CURLTUGMZLYLDI-UHFFFAOYSA-N
carbon dioxide
CO2
1
Commercial source
1
99.998
5
Estimated by the compiler
2
InChI=1S/C9H12/c1-3-9-7-5-4-6-8(9)2/h4-7H,3H2,1-2H3
HYFLWBNQFMXCPA-UHFFFAOYSA-N
1-ethyl-2-methylbenzene
1-methyl-2-ethylbenzene
benzene, 1-ethyl-2-methyl-
benzene, 1-methyl-2-ethyl-
o-ethyltoluene
C9H12
1
Commercial source
1
99
2
Estimated by the compiler
3
InChI=1S/C9H12/c1-3-9-6-4-5-8(2)7-9/h4-7H,3H2,1-2H3
ZLCSFXXPPANWQY-UHFFFAOYSA-N
1-ethyl-3-methylbenzene
1,3-ethylmethylbenzene
1-methyl-3-ethylbenzene
benzene, 1-ethyl-3-methyl-
benzene, 1-methyl-3-ethyl-
m-ethylmethylbenzene
m-ethyltoluene
m-methylethylbenzene
C9H12
1
Commercial source
1
98
2
Estimated by the compiler
4
InChI=1S/C9H12/c1-3-9-6-4-8(2)5-7-9/h4-7H,3H2,1-2H3
JRLPEMVDPFPYPJ-UHFFFAOYSA-N
1-ethyl-4-methylbenzene
1-methyl-4-ethylbenzene
benzene, 1-ethyl-4-methyl-
benzene, 1-methyl-4-ethyl-
p-ethylmethylbenzene
p-ethyltoluene
p-methylethylbenzene
C9H12
1
Commercial source
1
98
2
Estimated by the compiler
1
1
1
2
1
Principal objective of the work
ARR
TRC
7/21/2009
1
Binary diffusion coefficient, m2/s
Taylor dispersion method
Fluid (supercritical or subcritical phases)
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Fluid (supercritical or subcritical phases)
1
Mole fraction
2
Fluid (supercritical or subcritical phases)
0
1
1
Temperature, K
Fluid (supercritical or subcritical phases)
2
Pressure, kPa
Fluid (supercritical or subcritical phases)
1
313
3
2
15000
2
1
1.056e-08
4
1
0.34
1
313
3
2
20000
1
1
9.94e-09
3
1
0.44
1
313
3
2
25000
2
1
8.97e-09
3
1
0.25
1
313
3
2
30000
1
1
8.23e-09
3
1
0.24
1
313
3
2
35000
2
1
7.76e-09
3
1
0.2
1
323
3
2
15000
2
1
1.263e-08
4
1
0.53
1
323
3
2
20000
1
1
1.149e-08
4
1
0.44
1
323
3
2
25000
2
1
1.042e-08
4
1
0.51
1
323
3
2
30000
1
1
9.66e-09
3
1
0.26
1
323
3
2
35000
2
1
8.82e-09
3
1
0.22
1
333
3
2
15000
2
1
1.43e-08
4
1
0.55
1
333
3
2
20000
1
1
1.264e-08
4
1
0.54
1
333
3
2
25000
2
1
1.194e-08
4
1
0.37
1
333
3
2
30000
1
1
1.062e-08
4
1
0.38
1
333
3
2
35000
2
1
1.028e-08
4
1
0.43
2
1
1
3
1
Principal objective of the work
ARR
TRC
7/21/2009
1
Binary diffusion coefficient, m2/s
Taylor dispersion method
Fluid (supercritical or subcritical phases)
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Fluid (supercritical or subcritical phases)
1
Mole fraction
3
Fluid (supercritical or subcritical phases)
0
1
1
Temperature, K
Fluid (supercritical or subcritical phases)
2
Pressure, kPa
Fluid (supercritical or subcritical phases)
1
313
3
2
15000
2
1
1.057e-08
4
1
0.35
1
313
3
2
20000
1
1
9.89e-09
3
1
0.33
1
313
3
2
25000
2
1
8.96e-09
3
1
0.33
1
313
3
2
30000
1
1
8.12e-09
3
1
0.22
1
313
3
2
35000
2
1
7.71e-09
3
1
0.22
1
323
3
2
15000
2
1
1.264e-08
4
1
0.53
1
323
3
2
20000
1
1
1.148e-08
4
1
0.31
1
323
3
2
25000
2
1
1.043e-08
4
1
0.3
1
323
3
2
30000
1
1
9.37e-09
3
1
0.31
1
323
3
2
35000
2
1
8.74e-09
3
1
0.27
1
333
3
2
15000
2
1
1.417e-08
4
1
1.03
1
333
3
2
20000
1
1
1.245e-08
4
1
0.35
1
333
3
2
25000
2
1
1.213e-08
4
1
0.41
1
333
3
2
30000
1
1
1.073e-08
4
1
0.3
1
333
3
2
35000
2
1
1.019e-08
4
1
0.33
3
1
1
4
1
Principal objective of the work
ARR
TRC
7/21/2009
1
Binary diffusion coefficient, m2/s
Taylor dispersion method
Fluid (supercritical or subcritical phases)
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Fluid (supercritical or subcritical phases)
1
Mole fraction
4
Fluid (supercritical or subcritical phases)
0
1
1
Temperature, K
Fluid (supercritical or subcritical phases)
2
Pressure, kPa
Fluid (supercritical or subcritical phases)
1
313
3
2
15000
2
1
1.053e-08
4
1
0.37
1
313
3
2
20000
1
1
9.64e-09
3
1
0.26
1
313
3
2
25000
2
1
8.87e-09
3
1
0.31
1
313
3
2
30000
1
1
8.08e-09
3
1
0.32
1
313
3
2
35000
2
1
7.55e-09
3
1
0.24
1
323
3
2
15000
2
1
1.243e-08
4
1
0.38
1
323
3
2
20000
1
1
1.09e-08
4
1
0.31
1
323
3
2
25000
2
1
9.98e-09
3
1
0.32
1
323
3
2
30000
1
1
9.04e-09
3
1
0.26
1
323
3
2
35000
2
1
8.64e-09
3
1
0.33
1
333
3
2
15000
2
1
1.452e-08
4
1
1.41
1
333
3
2
20000
1
1
1.245e-08
4
1
0.35
1
333
3
2
25000
2
1
1.111e-08
4
1
0.31
1
333
3
2
30000
1
1
1.063e-08
4
1
0.46
1
333
3
2
35000
2
1
9.99e-09
3
1
0.47