2
0
2009
liu
li
1
journal
Original
Liu, L.[Ling]
Li, Z.[Zhen]
Liu, Z.-W.[Zhong-Wen]
Liu, Z.-T.[Zhao-Tie]
J. Chem. Eng. Data
2009
2020-09-29
Solubilities of L-Proline in Subcritical HFC-134a and Supercritical CO2 Fluids
A static method coupled with gravimetric analysis was used to measure the solubility of L-proline in subcritical 1,1,1,2-tetrafluoroethane (HFC-134a) and supercritical CO2 (scCO2). The solubility of L-proline is much higher in HFC-134a fluid than in scCO2. The solubilities of L-proline in HFC-134a and scCO2 are affected by temperature and pressure. The solubilities increase with increasing temperature and pressure for both scCO2 and HFC-134a solvents. The densities of scCO2 and subcritical HFC-134a were calculated using the Peng-Robinson (P-R) equation. Experimentally determined density data were used to assess the accuracy of the P-R equation.
10.1021/je801009z
9
54
2780-2784
1
InChI=1S/CO2/c2-1-3
CURLTUGMZLYLDI-UHFFFAOYSA-N
carbon dioxide
CO2
1
Commercial source
1
99
2
Estimated by the compiler
2
InChI=1S/C2H2F4/c3-1-2(4,5)6/h1H2
LVGUZGTVOIAKKC-UHFFFAOYSA-N
1,1,1,2-tetrafluoroethane
1,2,2,2-tetrafluoroethane
Freon 134a
R-134a
C2H2F4
1
Commercial source
1
99.9
3
Stated by supplier
3
InChI=1S/C5H9NO2/c7-5(8)4-2-1-3-6-4/h4,6H,1-3H2,(H,7,8)/t4-/m0/s1
ONIBWKKTOPOVIA-BYPYZUCNSA-N
L-proline
(-)-(S)-proline
(S)-2-pyrrolidinecarboxylic acid
C5H9NO2
1
Commercial source
1
99
2
Estimated by the compiler
1
1
1
Principal objective of the work
DCT
TRC
9/29/2009
1
Mass density, kg/m3
Vibrating tube 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
Pressure, kPa
Fluid (supercritical or subcritical phases)
2
Temperature, K
Fluid (supercritical or subcritical phases)
1
10000
1
2
313
3
1
570
2
1
440
1
15000
2
2
313
3
1
780
2
1
20
1
20000
1
2
308
3
1
870
2
1
120
1
20000
1
2
313
3
1
850
2
1
80
1
20000
1
2
318
3
1
820
2
1
20
1
20000
1
2
323
3
1
790
2
1
20
1
20000
1
2
328
3
1
760
2
1
80
1
20000
1
2
333
3
1
730
2
1
140
1
20000
1
2
313
3
1
830
2
1
60
1
25000
2
2
313
3
1
890
2
1
180
1
36000
2
2
313
3
1
900
1
1
200
2
2
1
Principal objective of the work
DCT
TRC
9/29/2009
1
Mass density, kg/m3
Vibrating tube method
Liquid
Direct value, X
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
1
Pressure, kPa
Liquid
2
Temperature, K
Liquid
1
5000
1
2
308
3
1
1150
3
1
100
1
10100
3
2
308
3
1
1180
3
1
60
1
15400
3
2
308
3
1
1210
3
1
10
1
19600
3
2
288
3
1
1290
3
1
120
1
19600
3
2
298
3
1
1270
3
1
60
1
19600
3
2
308
3
1
1240
3
1
10
1
19600
3
2
318
3
1
1210
3
1
60
1
19600
3
2
328
3
1
1180
3
1
120
1
19600
3
2
308
3
1
1240
3
1
60
1
23700
3
2
308
3
1
1260
3
1
100
3
1
1
3
1
Principal objective of the work
DCT
TRC
9/29/2009
1
Mass concentration, kg/m3
gravimetric analysis
Fluid (supercritical or subcritical phases)
Direct value, X
1
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Fluid (supercritical or subcritical phases)
Crystal
3
1
Pressure, kPa
Fluid (supercritical or subcritical phases)
20000
1
1
Temperature, K
Fluid (supercritical or subcritical phases)
1
308
3
1
0.279
3
1
0.028
1
318
3
1
0.76
3
1
0.076
1
328
3
1
1.074
4
1
0.107
4
3
1
2
1
Principal objective of the work
DCT
TRC
9/29/2009
1
Mass concentration, kg/m3
gravimetric analysis
Liquid
Direct value, X
2
1
Data file compiler
Propagation of evaluated standard uncertainties
95
Liquid
Crystal
3
1
Pressure, kPa
Liquid
20000
1
1
Temperature, K
Liquid
1
308
3
1
5.19
4
1
0.519
1
318
3
1
7.47
4
1
0.747
1
328
3
1
9.62
4
1
0.962