2
0
2011
don
zhe
0
journal
Original
Dong, L.[Li]
Zheng, D.[Danxing]
Sun, G.[Guangming]
Wu, X.[Xianghong]
J. Chem. Eng. Data
2011
2020-09-29
Vapor Liquid Equilibrium Measurements of Difluoromethane + [Emim]OTf, Difluoromethane + [Bmim]OTf, Difluoroethane + [Emim]OTf, and Difluoroethane + [Bmim]OTf Systems
Solubility behaviors of binary difluoromethane (HFC-32) and 1,1-difluoroethane (HFC-152a) systems with ionic liquids (ILs) 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ([Emim]OTf) and 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([Bmim]OTf) have been studied by using an isothermal synthetic apparatus at temperatures (273.15, 298.15, 323.15 and 348.15) K and at pressures (0.04 to 1.0) MPa. Experimental solubility data were successfully correlated with the nonrandom two-liquid (NRTL) activity coefficient model. It was found that the solubility of hydrofluorocarbons (HFCs) in ILs is affected by the change of alkyl chain length in the cation.
10.1021/je2005566
9
56
3663-3668
1
InChI=1S/CH2F2/c2-1-3/h1H2
RWRIWBAIICGTTQ-UHFFFAOYSA-N
difluoromethane
Freon 32
R-32
methylene difluoride
CH2F2
1
Commercial source
1
99.97
4
Stated by supplier
2
InChI=1S/C2H4F2/c1-2(3)4/h2H,1H3
NPNPZTNLOVBDOC-UHFFFAOYSA-N
1,1-difluoroethane
Freon 152a
R-152a
ethylidene fluoride
C2H4F2
1
Commercial source
1
99.98
4
Stated by supplier
3
InChI=1S/C6H11N2.CHF3O3S/c1-3-8-5-4-7(2)6-8;2-1(3,4)8(5,6)7/h4-6H,3H2,1-2H3;(H,5,6,7)/q+1;/p-1
ZPTRYWVRCNOTAS-UHFFFAOYSA-M
1-ethyl-3-methylimidazolium trifluoromethanesulfonate
1-ethyl-3-methyl-1H-imidazol-3-ium trifluoromethanesulfonate
1-ethyl-3-methylimidazolium triflate
C7H11F3N2O3S
1
Commercial source
1
99
2
Stated by supplier
2
Dried by vacuum heating
4
InChI=1S/C8H15N2.CHF3O3S/c1-3-4-5-10-7-6-9(2)8-10;2-1(3,4)8(5,6)7/h6-8H,3-5H2,1-2H3;(H,5,6,7)/q+1;/p-1
FRZPYEHDSAQGAS-UHFFFAOYSA-M
1-butyl-3-methylimidazolium trifluoromethanesulfonate
1-butyl-3-methylimidazolium 1,1,1-trifluoromethanesulfonate
1-butyl-3-methylimidazolium triflate
C9H15F3N2O3S
1
Commercial source
1
99
2
Stated by supplier
2
Dried by vacuum heating
5
InChI=1S/CO2/c2-1-3
CURLTUGMZLYLDI-UHFFFAOYSA-N
carbon dioxide
CO2
1
notDescribed
6
InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
ethanol
ethyl alcohol
C2H6O
1
notDescribed
1
6
1
5
1
Principal objective of the work
BEM
XXX
10/5/2011
1
Mole fraction
Pressure drop
5
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
313.15
5
1
Pressure, kPa
Liquid
1
514
3
1
0.027
2
1
0.014
1
1155
4
1
0.063
2
1
0.014
1
1600
2
1
0.088
2
1
0.014
1
2061
4
1
0.113
3
1
0.014
1
2120
3
1
0.117
3
1
0.014
1
3020
3
1
0.167
3
1
0.014
1
3270
3
1
0.181
3
1
0.014
1
3810
3
1
0.212
3
1
0.014
2
1
1
3
1
Principal objective of the work
BEM
XXX
10/5/2011
1
Mole fraction
Pressure drop
1
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Pressure, kPa
Liquid
1
273.14
5
2
195
3
1
0.204
3
1
0.014
1
273.15
5
2
297
3
1
0.285
3
1
0.014
1
273.16
5
2
399
3
1
0.369
3
1
0.015
1
273.16
5
2
494
3
1
0.446
3
1
0.018
1
273.16
5
2
692
3
1
0.63
3
1
0.026
1
273.19
5
2
590
2
1
0.531
3
1
0.022
1
273.21
5
2
101
3
1
0.123
3
1
0.014
1
298.11
5
2
857
3
1
0.432
3
1
0.017
1
298.12
5
2
505
3
1
0.274
3
1
0.014
1
298.14
5
2
204
3
1
0.116
3
1
0.014
1
298.14
5
2
305
3
1
0.174
3
1
0.014
1
298.15
5
2
397
3
1
0.224
3
1
0.014
1
298.15
5
2
698
3
1
0.363
3
1
0.015
1
298.16
5
2
102
3
1
0.061
2
1
0.014
1
298.16
5
2
603
3
1
0.321
3
1
0.014
1
298.16
5
2
799
3
1
0.407
3
1
0.016
1
323.13
5
2
97
2
1
0.039
2
1
0.014
1
323.13
5
2
701
3
1
0.225
3
1
0.014
1
323.14
5
2
501
3
1
0.171
3
1
0.014
1
323.15
5
2
983
3
1
0.303
3
1
0.014
1
323.16
5
2
399
3
1
0.135
3
1
0.014
1
323.17
5
2
598
3
1
0.197
3
1
0.014
1
323.17
5
2
799
3
1
0.254
3
1
0.014
1
323.19
5
2
908
3
1
0.283
3
1
0.014
1
323.2
5
2
195
3
1
0.073
2
1
0.014
1
323.2
5
2
303
3
1
0.109
3
1
0.014
1
348.14
5
2
107
3
1
0.029
2
1
0.014
1
348.14
5
2
914
3
1
0.197
3
1
0.014
1
348.14
5
2
1006
4
1
0.213
3
1
0.014
1
348.15
5
2
408
3
1
0.096
2
1
0.014
1
348.15
5
2
510
2
1
0.114
3
1
0.014
1
348.15
5
2
608
3
1
0.133
3
1
0.014
1
348.15
5
2
807
3
1
0.176
3
1
0.014
1
348.15
5
2
1036
4
1
0.22
3
1
0.014
1
348.16
5
2
209
3
1
0.052
2
1
0.014
1
348.16
5
2
311
3
1
0.075
2
1
0.014
1
348.16
5
2
706
3
1
0.156
3
1
0.014
3
1
1
4
1
Principal objective of the work
BEM
XXX
10/5/2011
1
Mole fraction
Pressure drop
1
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Pressure, kPa
Liquid
1
273.13
5
2
412
3
1
0.465
3
1
0.019
1
273.14
5
2
636
3
1
0.683
3
1
0.028
1
273.15
5
2
195
3
1
0.243
3
1
0.015
1
273.17
5
2
500
1
1
0.547
3
1
0.022
1
273.17
5
2
593
3
1
0.639
3
1
0.026
1
273.19
5
2
104
3
1
0.14
3
1
0.015
1
273.19
5
2
303
3
1
0.358
3
1
0.015
1
298.12
5
2
98
2
1
0.069
2
1
0.014
1
298.12
5
2
301
3
1
0.2
3
1
0.014
1
298.13
5
2
902
3
1
0.521
3
1
0.021
1
298.14
5
2
400
1
1
0.264
3
1
0.014
1
298.15
5
2
723
3
1
0.434
3
1
0.018
1
298.16
5
2
200
1
1
0.139
3
1
0.014
1
298.16
5
2
530
2
1
0.333
3
1
0.014
1
298.17
5
2
830
2
1
0.484
3
1
0.02
1
298.19
5
2
623
3
1
0.384
3
1
0.016
1
323.12
5
2
400
1
1
0.15
3
1
0.014
1
323.13
5
2
299
3
1
0.117
3
1
0.014
1
323.15
5
2
507
3
1
0.191
3
1
0.014
1
323.16
5
2
205
3
1
0.083
2
1
0.014
1
323.16
5
2
697
3
1
0.254
3
1
0.014
1
323.18
5
2
801
3
1
0.285
3
1
0.014
1
323.2
5
2
900
1
1
0.313
3
1
0.014
1
323.21
5
2
1000
1
1
0.341
3
1
0.014
1
323.22
5
2
101
3
1
0.047
2
1
0.014
1
323.22
5
2
602
3
1
0.223
3
1
0.014
1
323.22
5
2
1100
2
1
0.368
3
1
0.015
1
348.12
5
2
103
3
1
0.033
2
1
0.014
1
348.14
5
2
609
3
1
0.159
3
1
0.014
1
348.15
5
2
500
1
1
0.137
3
1
0.014
1
348.15
5
2
703
3
1
0.181
3
1
0.014
1
348.17
5
2
802
3
1
0.202
3
1
0.014
1
348.18
5
2
901
3
1
0.222
3
1
0.014
1
348.19
5
2
1003
4
1
0.242
3
1
0.014
1
348.2
5
2
201
3
1
0.065
2
1
0.014
1
348.23
5
2
299
3
1
0.09
2
1
0.014
1
348.24
5
2
403
3
1
0.114
3
1
0.014
4
2
1
3
1
Principal objective of the work
BEM
XXX
10/5/2011
1
Mole fraction
Pressure drop
2
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Pressure, kPa
Liquid
1
273.16
5
2
198
3
1
0.376
3
1
0.018
1
273.22
5
2
40
1
1
0.049
2
1
0.016
1
273.24
5
2
74
2
1
0.108
3
1
0.016
1
273.25
5
2
157
3
1
0.269
3
1
0.016
1
298.14
5
2
386
3
1
0.369
3
1
0.015
1
298.15
5
2
96
2
1
0.066
2
1
0.014
1
298.15
5
2
173
3
1
0.135
3
1
0.015
1
298.15
5
2
279
3
1
0.255
3
1
0.015
1
298.15
5
2
454
3
1
0.452
3
1
0.019
1
323.13
5
2
240
2
1
0.143
3
1
0.014
1
323.14
5
2
116
3
1
0.061
2
1
0.014
1
323.14
5
2
368
3
1
0.226
3
1
0.014
1
323.14
5
2
756
3
1
0.473
3
1
0.019
1
323.15
5
2
314
3
1
0.194
3
1
0.014
1
323.16
5
2
447
3
1
0.282
3
1
0.014
1
323.2
5
2
528
3
1
0.332
3
1
0.014
1
348.14
5
2
204
3
1
0.088
2
1
0.014
1
348.15
5
2
111
3
1
0.048
2
1
0.014
1
348.16
5
2
519
3
1
0.259
3
1
0.014
1
348.16
5
2
645
3
1
0.325
3
1
0.014
1
348.16
5
2
741
3
1
0.371
3
1
0.015
1
348.16
5
2
848
3
1
0.429
3
1
0.017
1
348.17
5
2
308
3
1
0.14
3
1
0.014
1
348.17
5
2
423
3
1
0.202
3
1
0.014
5
2
1
4
1
Principal objective of the work
BEM
XXX
10/5/2011
1
Mole fraction
Pressure drop
2
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Gas
1
Temperature, K
Liquid
2
Pressure, kPa
Liquid
1
273.22
5
2
56
2
1
0.095
2
1
0.017
1
273.23
5
2
97
2
1
0.184
3
1
0.017
1
273.24
5
2
144
3
1
0.302
3
1
0.017
1
273.24
5
2
191
3
1
0.409
3
1
0.019
1
298.13
5
2
218
3
1
0.222
3
1
0.015
1
298.14
5
2
117
3
1
0.121
3
1
0.014
1
298.16
5
2
371
3
1
0.386
3
1
0.016
1
298.16
5
2
460
2
1
0.496
3
1
0.021
1
298.18
5
2
290
2
1
0.306
3
1
0.015
1
323.15
5
2
105
3
1
0.078
2
1
0.014
1
323.15
5
2
248
3
1
0.182
3
1
0.014
1
323.15
5
2
421
3
1
0.305
3
1
0.014
1
323.15
5
2
500
1
1
0.35
3
1
0.014
1
323.15
5
2
734
3
1
0.494
3
1
0.02
1
323.16
5
2
619
3
1
0.426
3
1
0.017
1
323.16
5
2
813
3
1
0.536
3
1
0.022
1
348.12
5
2
641
3
1
0.352
3
1
0.014
1
348.13
5
2
107
3
1
0.06
2
1
0.014
1
348.13
5
2
743
3
1
0.399
3
1
0.016
1
348.13
5
2
879
3
1
0.47
3
1
0.019
1
348.15
5
2
223
3
1
0.123
3
1
0.014
1
348.15
5
2
313
3
1
0.178
3
1
0.014
1
348.15
5
2
414
3
1
0.23
3
1
0.014
1
348.18
5
2
513
3
1
0.291
3
1
0.014