2
0
2009
cal
gon
2
journal
Original
Calvar, N.[Noelia]
Gonzalez, B.[Begona]
Dominguez, A.[Angeles]
Macedo, E.[Eugenia]
J. Chem. Thermodyn.
2009
2020-09-29
Osmotic coefficients of binary mixtures of 1-butyl-3-methylimidazolium methylsulfate and 1,3-dimethylimidazolium methylsulfate with alcohols at T = 323.15 K
Measurements of osmotic coefficients of BMimMSO4 (1-butyl-3-methylimidazolium methylsulfate) and MMimMSO4 (1,3-dimethylimidazolium methylsulfate) with ethanol, 1-propanol, and 2-propanol at T = 323.15 K are reported in this work. Vapour pressure and activity values for the binary systems studied are obtained from experimental results. The osmotic coefficients are correlated using the extended Pitzer model modified by Archer and the modified NRTL (MNRTL) model. The standard deviations obtained with both models are lower than 0.013 and 0.060, respectively. The parameters obtained with the extended Pitzer model of Archer are used to calculate the mean molal activity coefficients and the excess Gibbs free energy of the binary mixtures.
Osmotic coefficients
Activity
Vapour pressure osmometry
Ionic liquids
10.1016/j.jct.2008.12.021
5
41
617-622
1
InChI=1S/C5H9N2.CH4O4S/c1-6-3-4-7(2)5-6;1-5-6(2,3)4/h3-5H,1-2H3;1H3,(H,2,3,4)/q+1;/p-1
WOKQGMYCUGJNIJ-UHFFFAOYSA-M
1,3-dimethylimidazolium methylsulfate
1,3-dimethylimidazolium methyl sulfate
C6H12N2O4S
1
Synthesized by the authors
1
Dried by vacuum heating
2
0.03
1
Karl Fischer titration
2
InChI=1S/C8H15N2.CH4O4S/c1-3-4-5-10-7-6-9(2)8-10;1-5-6(2,3)4/h6-8H,3-5H2,1-2H3;1H3,(H,2,3,4)/q+1;/p-1
MEMNKNZDROKJHP-UHFFFAOYSA-M
1-butyl-3-methylimidazolium methyl sulfate
1-butyl-3-methyl-1H-imidazolium methyl sulfate
1-butyl-3-methylimidazolium methyl sulfate [BMIM][MeSO4]
C9H18N2O4S
1
Synthesized by the authors
1
Dried by vacuum heating
2
0.03
1
Karl Fischer titration
3
InChI=1S/C3H8O/c1-2-3-4/h4H,2-3H2,1H3
BDERNNFJNOPAEC-UHFFFAOYSA-N
propan-1-ol
1-propanol
n-propanol
n-propyl alcohol
C3H8O
1
Commercial source
1
99.9
3
Chemical analysis
2
De-gassed by boiling or ultrasonically
Molecular sieve treatment
De-gassed by boiling or ultrasonically
Molecular sieve treatment
3
0.0002
1
Karl Fischer titration
4
InChI=1S/C3H8O/c1-3(2)4/h3-4H,1-2H3
KFZMGEQAYNKOFK-UHFFFAOYSA-N
propan-2-ol
2-propanol
isopropanol
isopropyl alcohol
sec-propyl alcohol
C3H8O
1
Commercial source
1
99.8
3
Chemical analysis
2
De-gassed by boiling or ultrasonically
Molecular sieve treatment
De-gassed by boiling or ultrasonically
Molecular sieve treatment
3
0.0002
1
Karl Fischer titration
5
InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
ethanol
ethyl alcohol
C2H6O
1
Commercial source
1
99.9
3
Chemical analysis
2
De-gassed by boiling or ultrasonically
Molecular sieve treatment
De-gassed by boiling or ultrasonically
Molecular sieve treatment
3
0.0002
1
Karl Fischer titration
1
4
1
2
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
4
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
2
Liquid
1
0.0524
3
1
0.95
3
1
0.012
1
0.0842
3
1
0.905
3
1
0.012
1
0.1084
4
1
0.871
3
1
0.013
1
0.2087
4
1
0.799
3
1
0.014
1
0.3036
4
1
0.733
3
1
0.015
1
0.4106
4
1
0.685
3
1
0.016
1
0.4869
4
1
0.648
3
1
0.017
1
0.682
4
1
0.588
3
1
0.019
1
0.9823
4
1
0.523
3
1
0.021
1
1.3202
5
1
0.493
3
1
0.022
1
1.6922
5
1
0.488
3
1
0.022
1
2.0498
5
1
0.502
3
1
0.021
1
2.4462
5
1
0.48
3
1
0.022
1
2.8295
5
1
0.455
3
1
0.023
1
3.3106
5
1
0.451
3
1
0.023
2
5
1
1
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
1
Liquid
1
0.0289
3
1
0.815
3
1
0.014
1
0.0374
3
1
0.794
3
1
0.014
1
0.0789
3
1
0.719
3
1
0.016
1
0.0991
3
1
0.687
3
1
0.016
1
0.1941
4
1
0.626
3
1
0.018
1
0.3285
4
1
0.56
3
1
0.02
1
0.4326
4
1
0.53
3
1
0.021
1
0.5312
4
1
0.503
3
1
0.021
1
0.6925
4
1
0.479
3
1
0.022
1
0.9868
4
1
0.449
3
1
0.023
1
1.2835
5
1
0.424
3
1
0.024
1
1.6987
5
1
0.399
3
1
0.024
1
2.0777
5
1
0.382
3
1
0.025
1
2.4892
5
1
0.363
3
1
0.026
1
2.9367
5
1
0.345
3
1
0.026
1
3.3145
5
1
0.326
3
1
0.027
1
3.7093
5
1
0.325
3
1
0.027
1
4.016
5
1
0.331
3
1
0.027
3
3
1
1
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
3
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
1
Liquid
1
0.0512
3
1
0.848
3
1
0.013
1
0.079
3
1
0.772
3
1
0.014
1
0.0997
3
1
0.727
3
1
0.015
1
0.2023
4
1
0.67
3
1
0.017
1
0.2902
4
1
0.59
3
1
0.019
1
0.3952
4
1
0.544
3
1
0.02
1
0.488
4
1
0.526
3
1
0.021
1
0.6881
4
1
0.492
3
1
0.022
1
0.9815
4
1
0.454
3
1
0.023
1
1.2994
5
1
0.432
3
1
0.023
1
1.691
5
1
0.396
3
1
0.025
1
2.0974
5
1
0.375
3
1
0.025
1
2.5454
5
1
0.36
3
1
0.026
1
2.9285
5
1
0.343
3
1
0.026
1
3.3226
5
1
0.334
3
1
0.026
1
3.71
5
1
0.322
3
1
0.027
4
4
1
1
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
4
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
1
Liquid
1
0.0241
3
1
0.914
3
1
0.012
1
0.0557
3
1
0.846
3
1
0.013
1
0.2089
4
1
0.683
3
1
0.016
1
0.3053
4
1
0.614
3
1
0.018
1
0.3982
4
1
0.588
3
1
0.019
1
0.6947
4
1
0.509
3
1
0.021
1
0.9721
4
1
0.461
3
1
0.023
1
1.2737
5
1
0.442
3
1
0.023
1
1.6596
5
1
0.416
3
1
0.024
1
2.0575
5
1
0.392
3
1
0.025
1
2.4473
5
1
0.364
3
1
0.025
1
2.8266
5
1
0.343
3
1
0.026
1
3.3134
5
1
0.329
3
1
0.027
1
3.712
5
1
0.323
3
1
0.027
1
4.1118
5
1
0.298
3
1
0.028
5
5
1
2
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
5
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
2
Liquid
1
0.0495
3
1
0.78
3
1
0.014
1
0.0783
3
1
0.716
3
1
0.016
1
0.176
4
1
0.646
3
1
0.017
1
0.3283
4
1
0.573
3
1
0.019
1
0.3907
4
1
0.55
3
1
0.02
1
0.5167
4
1
0.529
3
1
0.021
1
0.6846
4
1
0.508
3
1
0.021
1
0.9851
4
1
0.496
3
1
0.021
1
1.3181
5
1
0.499
3
1
0.021
1
1.7272
5
1
0.48
3
1
0.022
1
2.0926
5
1
0.474
3
1
0.022
1
2.507
5
1
0.465
3
1
0.022
1
2.9138
5
1
0.448
3
1
0.023
1
3.3109
5
1
0.424
3
1
0.024
1
3.697
5
1
0.408
3
1
0.024
6
3
1
2
1
Principal objective of the work
WZ
TRC
6/28/2009
1
Osmotic coefficient
vapour pressure osmometer
Liquid
Direct value, X
3
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
323.15
5
1
Molality, mol/kg
2
Liquid
1
0.0437
3
1
0.873
3
1
0.013
1
0.0547
3
1
0.829
3
1
0.013
1
0.2041
4
1
0.691
3
1
0.016
1
0.3571
4
1
0.639
3
1
0.018
1
0.5002
4
1
0.628
3
1
0.018
1
0.6627
4
1
0.628
3
1
0.018
1
0.8487
4
1
0.629
3
1
0.018
1
1.0071
5
1
0.629
3
1
0.018
1
1.2796
5
1
0.628
3
1
0.018
1
1.6654
5
1
0.62
3
1
0.018
1
2.1435
5
1
0.599
3
1
0.019
1
2.9365
5
1
0.581
3
1
0.019