2
0
2010
wan
yan
1
journal
Original
Wang, Y.[Yun]
Yan, Y.[Yongsheng]
Hu, S.[Shiping]
Han, J.[Juan]
Xu, X.[Xiaohui]
J. Chem. Eng. Data
2010
2020-09-29
Phase Diagrams of Ammonium Sulfate + Ethanol/1-Propanol/2-Propanol + Water Aqueous Two-Phase Systems at 298.15 K and Correlation
Binodal data for the ethanol/1-propanol/2-propanol + ammonium sulfate + water systems were determined at 298.15 K. On the basis of an empirical equation and lever rule, the liquid-liquid equilibrium compositions of the ethanol + ammonium sulfate + water system were directly calculated by Matlab. The Othmer-Tobias equation and Bancroft equation proved the reliability of the calculation method and the corresponding tie-line data. The phase-separation abilities of hydrophilic alcohols were compared by the effective excluded volume (EEV) of salt and the binodal curves plotted in molality. The phase-separation abilities of the investigated alcohols are in the order of 1-propanol greater than 2-propanol greater than ethanol greater than methanol. The mechanism of phase separation and the effects of alcohols, salts, and pH values are also discussed. The results show that the increase in the amount of phase-forming substance and the decrease in pH values (from 9.03 to 3.58) are both advantageous to the formation of the aqueous two-phase system (ATPS).
10.1021/je900504e
2
55
876-881
1
InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
ethanol
ethyl alcohol
C2H6O
1
Commercial source
1
99.7
3
Stated by supplier
2
InChI=1S/H2O/h1H2
XLYOFNOQVPJJNP-UHFFFAOYSA-N
water
H2O
1
Commercial source
1
99.9
3
Estimated by the compiler
2
Fractional distillation
3
InChI=1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
BFNBIHQBYMNNAN-UHFFFAOYSA-N
ammonium sulfate
H8N2O4S
1
Commercial source
1
99
2
Stated by supplier
4
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
2
Stated by supplier
5
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
99.7
3
Stated by supplier
1
1
1
2
1
3
1
Principal objective of the work
VVD
TRC
4/8/2014
1
Mass fraction
Titration method
3
Liquid mixture 1
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid mixture 1
Liquid mixture 2
1
Temperature, K
Liquid mixture 1
298.15
5
2
Pressure, kPa
Liquid mixture 1
101
3
1
Mass fraction
1
Liquid mixture 1
1
0.0609
3
1
0.3577
4
1
0.0143
1
0.0726
3
1
0.3412
4
1
0.0136
1
0.0732
3
1
0.339
4
1
0.0136
1
0.0762
3
1
0.335
4
1
0.0134
1
0.0818
3
1
0.323
4
1
0.0129
1
0.0935
3
1
0.3101
4
1
0.0124
1
0.1027
4
1
0.2959
4
1
0.0118
1
0.1187
4
1
0.2724
4
1
0.0109
1
0.1219
4
1
0.2675
4
1
0.0107
1
0.1279
4
1
0.2626
4
1
0.0105
1
0.1394
4
1
0.2506
4
1
0.01
1
0.1475
4
1
0.2449
4
1
0.0098
1
0.1509
4
1
0.2438
4
1
0.0098
1
0.152
4
1
0.2404
4
1
0.0096
1
0.1719
4
1
0.2214
4
1
0.0089
1
0.1753
4
1
0.2207
4
1
0.0088
1
0.2051
4
1
0.1969
4
1
0.0079
1
0.2062
4
1
0.1943
4
1
0.0078
1
0.2198
4
1
0.1838
4
1
0.0074
1
0.2279
4
1
0.1774
4
1
0.0071
1
0.248
4
1
0.1623
4
1
0.0065
1
0.2628
4
1
0.1516
4
1
0.0061
1
0.2664
4
1
0.149
4
1
0.006
1
0.2748
4
1
0.1434
4
1
0.0057
1
0.2814
4
1
0.1384
4
1
0.0055
1
0.2926
4
1
0.1307
4
1
0.0052
1
0.317
4
1
0.1142
4
1
0.0046
1
0.3247
4
1
0.1088
4
1
0.0044
1
0.3382
4
1
0.1025
4
1
0.0041
1
0.3578
4
1
0.0915
3
1
0.0037
1
0.3721
4
1
0.0832
3
1
0.0033
1
0.3728
4
1
0.0835
3
1
0.0033
1
0.3907
4
1
0.0749
3
1
0.003
1
0.3972
4
1
0.0713
3
1
0.0029
1
0.4135
4
1
0.0618
3
1
0.0025
1
0.4521
4
1
0.0477
3
1
0.0019
1
0.4661
4
1
0.0448
3
1
0.0018
1
0.4802
4
1
0.0401
3
1
0.0016
1
0.4931
4
1
0.0354
3
1
0.0014
1
0.4982
4
1
0.0344
3
1
0.0014
1
0.5135
4
1
0.0315
3
1
0.0013
1
0.5173
4
1
0.03
3
1
0.0012
1
0.5389
4
1
0.0266
3
1
0.0011
1
0.5428
4
1
0.0258
3
1
0.001
1
0.5806
4
1
0.018
3
1
0.0007
1
0.5828
4
1
0.0175
3
1
0.0007
1
0.6384
4
1
0.0089
2
1
0.0004
1
0.6895
4
1
0.0048
2
1
0.0002
2
1
1
2
1
3
1
Principal objective of the work
VVD
TRC
4/8/2014
1
Mass fraction
Titration method
3
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
3
1
Temperature, K
Liquid
298.15
5
2
Pressure, kPa
Liquid
101
3
1
Mass fraction
1
Liquid
1
0.0278
3
1
0.4065
4
1
0.0163
1
0.0374
3
1
0.393
4
1
0.0157
1
0.0457
3
1
0.3827
4
1
0.0153
1
0.0471
3
1
0.3826
4
1
0.0153
3
1
1
2
1
3
1
Principal objective of the work
VVD
TRC
4/8/2014
1
Mass fraction
OTHER
3
Liquid mixture 2
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
2
Mass fraction
OTHER
3
Liquid mixture 1
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
3
Mass fraction
OTHER
1
Liquid mixture 1
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid mixture 2
Liquid mixture 1
1
Temperature, K
Liquid mixture 2
298.15
5
2
Pressure, kPa
Liquid mixture 2
101
3
1
Mass fraction
1
Liquid mixture 2
1
0.0828
3
1
0.3228
4
1
0.0097
2
0.0474
3
1
0.0014
3
0.4569
4
1
0.0689
3
1
0.3424
4
1
0.0103
2
0.0288
3
1
0.0009
3
0.5234
4
1
0.054
3
1
0.3655
4
1
0.011
2
0.0182
3
1
0.0005
3
0.5787
4
1
0.0554
3
1
0.3632
4
1
0.0109
2
0.0184
3
1
0.0006
3
0.5775
4
1
0.0549
3
1
0.3641
4
1
0.0109
2
0.0192
3
1
0.0006
3
0.5727
4
1
0.0536
3
1
0.3662
4
1
0.011
2
0.0203
3
1
0.0006
3
0.5662
4
4
4
1
2
1
3
1
Principal objective of the work
VVD
TRC
4/8/2014
1
Mass fraction
Titration method
3
Liquid mixture 1
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid mixture 1
Liquid mixture 2
1
Temperature, K
Liquid mixture 1
298.15
5
2
Pressure, kPa
Liquid mixture 1
101
3
1
Mass fraction
4
Liquid mixture 1
1
0.0209
3
1
0.3679
4
1
0.0147
1
0.0215
3
1
0.3643
4
1
0.0146
1
0.0236
3
1
0.3258
4
1
0.013
1
0.0246
3
1
0.3398
4
1
0.0136
1
0.0325
3
1
0.3028
4
1
0.0121
1
0.0333
3
1
0.2975
4
1
0.0119
1
0.0341
3
1
0.2599
4
1
0.0104
1
0.0415
3
1
0.2351
4
1
0.0094
1
0.0421
3
1
0.2386
4
1
0.0095
1
0.0512
3
1
0.214
4
1
0.0086
1
0.0517
3
1
0.2082
4
1
0.0083
1
0.0556
3
1
0.202
4
1
0.0081
1
0.0639
3
1
0.1849
4
1
0.0074
1
0.0641
3
1
0.185
4
1
0.0074
1
0.0647
3
1
0.1884
4
1
0.0075
1
0.0684
3
1
0.1749
4
1
0.007
1
0.0693
3
1
0.1757
4
1
0.007
1
0.0806
3
1
0.1522
4
1
0.0061
1
0.0825
3
1
0.1527
4
1
0.0061
1
0.0908
3
1
0.1426
4
1
0.0057
1
0.0919
3
1
0.1395
4
1
0.0056
1
0.092
3
1
0.1398
4
1
0.0056
1
0.1094
4
1
0.1211
4
1
0.0048
1
0.135
4
1
0.1016
4
1
0.0041
1
0.1367
4
1
0.1
4
1
0.004
1
0.1435
4
1
0.0972
3
1
0.0039
1
0.1479
4
1
0.0947
3
1
0.0038
1
0.1744
4
1
0.0821
3
1
0.0033
1
0.219
4
1
0.0668
3
1
0.0027
1
0.251
4
1
0.0591
3
1
0.0024
1
0.277
4
1
0.0534
3
1
0.0021
1
0.3149
4
1
0.0463
3
1
0.0019
1
0.3731
4
1
0.0358
3
1
0.0014
1
0.3857
4
1
0.034
3
1
0.0014
1
0.4115
4
1
0.0296
3
1
0.0012
1
0.4319
4
1
0.0274
3
1
0.0011
1
0.4355
4
1
0.0263
3
1
0.0011
1
0.4789
4
1
0.021
3
1
0.0008
1
0.5224
4
1
0.0161
3
1
0.0006
1
0.5465
4
1
0.0137
3
1
0.0006
1
0.583
4
1
0.0108
3
1
0.0004
1
0.6307
4
1
0.0074
2
1
0.0003
1
0.6527
4
1
0.0062
2
1
0.0003
1
0.7027
4
1
0.0039
2
1
0.0002
5
5
1
2
1
3
1
Principal objective of the work
GC
TRC
3/5/2010
1
Mass fraction
Titration method
3
Liquid mixture 1
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid mixture 1
Liquid mixture 2
1
Temperature, K
Liquid mixture 1
298.15
5
2
Pressure, kPa
Liquid mixture 1
101
3
1
Mass fraction
5
Liquid mixture 1
1
0.0115
3
1
0.4138
4
1
0.0166
1
0.0155
3
1
0.4036
4
1
0.0161
1
0.0235
3
1
0.3593
4
1
0.0144
1
0.0292
3
1
0.3373
4
1
0.0135
1
0.0311
3
1
0.3263
4
1
0.0131
1
0.0355
3
1
0.3108
4
1
0.0124
1
0.0402
3
1
0.2995
4
1
0.012
1
0.0618
3
1
0.2498
4
1
0.01
1
0.0699
3
1
0.2374
4
1
0.0095
1
0.0875
3
1
0.2134
4
1
0.0085
1
0.0929
3
1
0.208
4
1
0.0083
1
0.1105
4
1
0.1895
4
1
0.0076
1
0.126
4
1
0.1766
4
1
0.0071
1
0.1575
4
1
0.1596
4
1
0.0064
1
0.2348
4
1
0.1192
4
1
0.0048
1
0.2573
4
1
0.1096
4
1
0.0044
1
0.2577
4
1
0.1106
4
1
0.0044
1
0.2689
4
1
0.106
4
1
0.0042
1
0.2807
4
1
0.1006
4
1
0.004
1
0.2908
4
1
0.0968
3
1
0.0039
1
0.3415
4
1
0.0756
3
1
0.003
1
0.3783
4
1
0.0616
3
1
0.0025
1
0.3874
4
1
0.0578
3
1
0.0023
1
0.3892
4
1
0.0576
3
1
0.0023
1
0.3898
4
1
0.057
3
1
0.0023
1
0.3902
4
1
0.056
3
1
0.0022
1
0.4044
4
1
0.0512
3
1
0.002
1
0.4181
4
1
0.0465
3
1
0.0019
1
0.4234
4
1
0.0448
3
1
0.0018
1
0.4254
4
1
0.044
3
1
0.0018
1
0.4331
4
1
0.0425
3
1
0.0017
1
0.452
4
1
0.0355
3
1
0.0014
1
0.4623
4
1
0.0332
3
1
0.0013
1
0.4722
4
1
0.0323
3
1
0.0013
1
0.4938
4
1
0.0265
3
1
0.0011
1
0.4981
4
1
0.0252
3
1
0.001
1
0.5108
4
1
0.0226
3
1
0.0009
1
0.5303
4
1
0.0199
3
1
0.0008
1
0.5443
4
1
0.0178
3
1
0.0007
1
0.5759
4
1
0.013
3
1
0.0005
1
0.5827
4
1
0.0124
3
1
0.0005
1
0.5848
4
1
0.0121
3
1
0.0005
1
0.6192
4
1
0.009
2
1
0.0004
1
0.6363
4
1
0.0076
2
1
0.0003
1
0.6402
4
1
0.0075
2
1
0.0003
1
0.7088
4
1
0.0036
2
1
0.0002
1
0.7113
4
1
0.0034
2
1
0.0001
1
0.7423
4
1
0.0023
2
1
0.0001
1
0.7579
4
1
0.0021
2
1
0.0001