化工学报 ›› 2020, Vol. 71 ›› Issue (8): 3633-3643.DOI: 10.11949/0438-1157.20200003
收稿日期:
2020-01-02
修回日期:
2020-06-03
出版日期:
2020-08-05
发布日期:
2020-08-05
通讯作者:
范杰平
作者简介:
高意(1996—),男,硕士研究生,基金资助:
Yi GAO(),Yahui CAO,Jieping FAN()
Received:
2020-01-02
Revised:
2020-06-03
Online:
2020-08-05
Published:
2020-08-05
Contact:
Jieping FAN
摘要:
为拓展结晶溶剂的范围和提高结晶分离熊果酸和齐墩果酸的性能,引入离子液体作为结晶溶剂。测定了熊果酸和齐墩果酸在六种离子液体+乙醇溶液中的溶解度数据,根据该数据,选取1-辛基-3-甲基咪唑六氟磷酸+乙醇混合溶液作为溶剂对熊果酸和齐墩果酸进行了结晶分离,并采用单因素实验对结晶工艺进行了初步优化。结果表明:在1-辛基-3-甲基咪唑六氟磷酸质量分数5%,熊果酸和齐墩果酸质量比1.5∶1,结晶温度30℃,结晶时间14 h的条件下,结晶产物中齐墩果酸的质量分数可以达到85%左右。
中图分类号:
高意, 曹亚慧, 范杰平. 离子液体中结晶分离熊果酸和齐墩果酸研究[J]. 化工学报, 2020, 71(8): 3633-3643.
Yi GAO, Yahui CAO, Jieping FAN. Study on crystallization separation of ursolic acid and oleanolic acid in ionic liquid[J]. CIESC Journal, 2020, 71(8): 3633-3643.
图2 六种离子液体结构(a)1-乙基-3-甲基咪唑双三氟甲磺酰亚胺盐;(b)1-辛基-3-甲基咪唑四氟硼酸;(c)1-丁基-3-甲基咪唑四氟硼酸;(d)1-丁基-3-甲基咪唑双三氟甲磺酰亚胺盐;(e)1-辛基-3-甲基咪唑双三氟甲磺酰亚胺盐;(f) 1-辛基-3-甲基咪唑六氟磷酸
Fig.2 The chemical structure of six ionic liquids
T/K | A | B | C | D | E | F |
---|---|---|---|---|---|---|
293.2 | 2.58701 | 4.62446 | 3.91696 | 4.08962 | 4.21600 | 4.95054 |
298.2 | 3.29014 | 5.50223 | 4.81039 | 5.10499 | 5.29339 | 5.10910 |
303.2 | 6.43360 | 7.16866 | 5.35800 | 6.73191 | 7.45408 | 7.41121 |
308.2 | 7.26193 | 7.37772 | 5.73489 | 7.14156 | 7.94014 | 8.12856 |
313.2 | 7.76808 | 7.72152 | 6.34713 | 7.28522 | 8.14792 | 9.20341 |
318.2 | 9.23542 | 8.46756 | 9.97358 | 9.03714 | 8.20060 | 10.14640 |
323.2 | 11.99561 | 10.87394 | 11.60734 | 10.82879 | 9.76161 | 11.87940 |
328.2 | 13.93287 | 10.97432 | 12.10037 | 11.91585 | 11.95445 | 12.84131 |
333.2 | 14.36265 | 11.72096 | 13.70408 | 12.14856 | 14.51312 | 19.50879 |
表1 UA在6种离子液体+乙醇的混合溶液中的溶解度
Table 1 Solubility of UA in the six mixed solutions of ionic liquids + ethanol
T/K | A | B | C | D | E | F |
---|---|---|---|---|---|---|
293.2 | 2.58701 | 4.62446 | 3.91696 | 4.08962 | 4.21600 | 4.95054 |
298.2 | 3.29014 | 5.50223 | 4.81039 | 5.10499 | 5.29339 | 5.10910 |
303.2 | 6.43360 | 7.16866 | 5.35800 | 6.73191 | 7.45408 | 7.41121 |
308.2 | 7.26193 | 7.37772 | 5.73489 | 7.14156 | 7.94014 | 8.12856 |
313.2 | 7.76808 | 7.72152 | 6.34713 | 7.28522 | 8.14792 | 9.20341 |
318.2 | 9.23542 | 8.46756 | 9.97358 | 9.03714 | 8.20060 | 10.14640 |
323.2 | 11.99561 | 10.87394 | 11.60734 | 10.82879 | 9.76161 | 11.87940 |
328.2 | 13.93287 | 10.97432 | 12.10037 | 11.91585 | 11.95445 | 12.84131 |
333.2 | 14.36265 | 11.72096 | 13.70408 | 12.14856 | 14.51312 | 19.50879 |
T/K | A | B | C | D | E | F |
---|---|---|---|---|---|---|
293.2 | 3.66277 | 3.90568 | 3.18137 | 3.82803 | 4.55719 | 4.82319 |
298.2 | 4.11362 | 4.95578 | 4.31056 | 4.99628 | 5.06101 | 5.14561 |
303.2 | 5.06655 | 5.27193 | 4.72241 | 5.20969 | 5.64367 | 5.38338 |
308.2 | 5.48627 | 5.85894 | 5.47927 | 5.51890 | 6.01389 | 5.94459 |
313.2 | 7.41711 | 7.05214 | 6.22817 | 5.99910 | 7.70761 | 7.04455 |
318.2 | 8.12955 | 7.52216 | 6.90739 | 8.61030 | 8.26677 | 7.94869 |
323.2 | 8.32516 | 8.86441 | 7.81490 | 9.39422 | 9.87569 | 9.81278 |
328.2 | 9.94503 | 10.66226 | 10.42502 | 11.90057 | 10.83787 | 10.30029 |
333.2 | 12.56636 | 14.51072 | 13.08634 | 15.93602 | 15.17506 | 14.08778 |
表2 OA在6种离子液体+乙醇的混合溶液中的溶解度
Table 2 Solubility of OA in the six mixed solutions of ionic liquids + ethanol
T/K | A | B | C | D | E | F |
---|---|---|---|---|---|---|
293.2 | 3.66277 | 3.90568 | 3.18137 | 3.82803 | 4.55719 | 4.82319 |
298.2 | 4.11362 | 4.95578 | 4.31056 | 4.99628 | 5.06101 | 5.14561 |
303.2 | 5.06655 | 5.27193 | 4.72241 | 5.20969 | 5.64367 | 5.38338 |
308.2 | 5.48627 | 5.85894 | 5.47927 | 5.51890 | 6.01389 | 5.94459 |
313.2 | 7.41711 | 7.05214 | 6.22817 | 5.99910 | 7.70761 | 7.04455 |
318.2 | 8.12955 | 7.52216 | 6.90739 | 8.61030 | 8.26677 | 7.94869 |
323.2 | 8.32516 | 8.86441 | 7.81490 | 9.39422 | 9.87569 | 9.81278 |
328.2 | 9.94503 | 10.66226 | 10.42502 | 11.90057 | 10.83787 | 10.30029 |
333.2 | 12.56636 | 14.51072 | 13.08634 | 15.93602 | 15.17506 | 14.08778 |
溶剂体系 | a | b | c | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|
A | 692.52 | -35383.00 | -100.48 | 0.9653 | 0.0903 | 0.6476 |
B | 190.14 | -10580.53 | -26.84 | 0.9470 | 0.0447 | 0.4667 |
C | 152.68 | -9827.87 | -20.75 | 0.9429 | 0.0813 | 0.7159 |
D | 272.51 | -14774.22 | -38.85 | 0.9638 | 0.0445 | 0.4517 |
E | -283.51 | 11096.12 | 43.53 | 0.9226 | 0.0861 | 0.7177 |
F | -613.83 | 25985.89 | 92.75 | 0.9359 | 0.0842 | 0.9308 |
表3 拟合UA溶解度数据的Apelblat模型参数
Table 3 Parameters of Apelblat model for UA solubility data
溶剂体系 | a | b | c | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|
A | 692.52 | -35383.00 | -100.48 | 0.9653 | 0.0903 | 0.6476 |
B | 190.14 | -10580.53 | -26.84 | 0.9470 | 0.0447 | 0.4667 |
C | 152.68 | -9827.87 | -20.75 | 0.9429 | 0.0813 | 0.7159 |
D | 272.51 | -14774.22 | -38.85 | 0.9638 | 0.0445 | 0.4517 |
E | -283.51 | 11096.12 | 43.53 | 0.9226 | 0.0861 | 0.7177 |
F | -613.83 | 25985.89 | 92.75 | 0.9359 | 0.0842 | 0.9308 |
溶剂体系 | a | b | c | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|
A | -137.28 | 3983.79 | 22.01 | 0.9668 | 0.0488 | 0.4339 |
B | -733.67 | 31653.76 | 110.41 | 0.9793 | 0.0522 | 0.3901 |
C | -616.69 | 26051.78 | 93.15 | 0.9815 | 0.0565 | 0.3499 |
D | -859.25 | 37156.84 | 129.20 | 0.9833 | 0.0579 | 0.4169 |
E | -662.98 | 28457.20 | 99.89 | 0.9226 | 0.0355 | 0.4564 |
F | -681.79 | 29501.32 | 102.58 | 0.9776 | 0.0279 | 0.3755 |
表4 拟合OA溶解度数据的Apelblat模型参数
Table 4 Parameters of Apelblat model for OA solubility data
溶剂体系 | a | b | c | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|
A | -137.28 | 3983.79 | 22.01 | 0.9668 | 0.0488 | 0.4339 |
B | -733.67 | 31653.76 | 110.41 | 0.9793 | 0.0522 | 0.3901 |
C | -616.69 | 26051.78 | 93.15 | 0.9815 | 0.0565 | 0.3499 |
D | -859.25 | 37156.84 | 129.20 | 0.9833 | 0.0579 | 0.4169 |
E | -662.98 | 28457.20 | 99.89 | 0.9226 | 0.0355 | 0.4564 |
F | -681.79 | 29501.32 | 102.58 | 0.9776 | 0.0279 | 0.3755 |
溶剂体系 | d | e | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|
A | -3506.69 | 13.26 | 0.9481 | 0.1411 | 0.8553 |
B | -2119.96 | 8.85 | 0.9493 | 0.0535 | 0.4929 |
C | -3247.37 | 12.40 | 0.9499 | 0.0751 | 0.7245 |
D | -2505.45 | 10.07 | 0.9613 | 0.0592 | 0.5042 |
E | -2635.59 | 10.52 | 0.9241 | 0.0771 | 0.7674 |
F | -3353.57 | 12.92 | 0.9189 | 0.0842 | 1.1310 |
表5 拟合UA溶解度数据的van’t Hoff模型参数
Table 5 Parameters of van’t Hoff model for UA solubility data
溶剂体系 | d | e | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|
A | -3506.69 | 13.26 | 0.9481 | 0.1411 | 0.8553 |
B | -2119.96 | 8.85 | 0.9493 | 0.0535 | 0.4929 |
C | -3247.37 | 12.40 | 0.9499 | 0.0751 | 0.7245 |
D | -2505.45 | 10.07 | 0.9613 | 0.0592 | 0.5042 |
E | -2635.59 | 10.52 | 0.9241 | 0.0771 | 0.7674 |
F | -3353.57 | 12.92 | 0.9189 | 0.0842 | 1.1310 |
溶剂体系 | d | e | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|
A | -2973.81 | 11.41 | 0.9696 | 0.0493 | 0.4483 |
B | -3272.18 | 12.40 | 0.9416 | 0.0780 | 0.7076 |
C | -3439.23 | 12.83 | 0.9585 | 0.0694 | 0.5660 |
D | -3824.57 | 14.17 | 0.9457 | 0.1079 | 0.8120 |
E | -3134.03 | 12.03 | 0.9423 | 0.0767 | 0.72243 |
F | -2921.80 | 11.33 | 0.9377 | 0.0744 | 0.6769 |
表6 拟合OA溶解度数据的van’t Hoff模型参数
Table 6 Parameters of van’t Hoff model for OA solubility data
溶剂体系 | d | e | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|
A | -2973.81 | 11.41 | 0.9696 | 0.0493 | 0.4483 |
B | -3272.18 | 12.40 | 0.9416 | 0.0780 | 0.7076 |
C | -3439.23 | 12.83 | 0.9585 | 0.0694 | 0.5660 |
D | -3824.57 | 14.17 | 0.9457 | 0.1079 | 0.8120 |
E | -3134.03 | 12.03 | 0.9423 | 0.0767 | 0.72243 |
F | -2921.80 | 11.33 | 0.9377 | 0.0744 | 0.6769 |
溶剂体系 | a1 | b1 | c1 | d1 | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|---|
A | 1.97×10-6 | -0.0013 | 0.56 | -97.48 | 0.9607 | 0.0805 | 0.6294 |
B | 2.07×10-5 | -0.0192 | 6.12 | -659.82 | 0.9373 | 0.0423 | 0.4633 |
C | -2.25×10-4 | 0.2149 | -68.09 | 7164.15 | 0.9501 | 0.0786 | 0.6106 |
D | -3.48×10-5 | 0.0333 | -10.37 | 1062.604 | 0.9563 | 0.0453 | 0.4527 |
E | 4.39×10-4 | -0.4094 | 127.38 | -13209.90 | 0.9787 | 0.0405 | 0.3438 |
F | 4.95×10-4 | -0.4577 | 141.33 | -14551.02 | 0.9494 | 0.0706 | 0.7548 |
表7 拟合UA溶解度数据的三次多项式模型参数
Table 7 Parameters of cubic polynomial model for UA solubility data
溶剂体系 | a1 | b1 | c1 | d1 | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|---|
A | 1.97×10-6 | -0.0013 | 0.56 | -97.48 | 0.9607 | 0.0805 | 0.6294 |
B | 2.07×10-5 | -0.0192 | 6.12 | -659.82 | 0.9373 | 0.0423 | 0.4633 |
C | -2.25×10-4 | 0.2149 | -68.09 | 7164.15 | 0.9501 | 0.0786 | 0.6106 |
D | -3.48×10-5 | 0.0333 | -10.37 | 1062.604 | 0.9563 | 0.0453 | 0.4527 |
E | 4.39×10-4 | -0.4094 | 127.38 | -13209.90 | 0.9787 | 0.0405 | 0.3438 |
F | 4.95×10-4 | -0.4577 | 141.33 | -14551.02 | 0.9494 | 0.0706 | 0.7548 |
溶剂体系 | a1 | b1 | c1 | d1 | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|---|
A | 1.19×10-4 | -0.1090 | 33.42 | -3425.12 | 0.9640 | 0.0548 | 0.4123 |
B | 3.16×10-4 | -0.2903 | 89.10 | -9120.43 | 0.9901 | 0.0263 | 0.2462 |
C | 2.88×10-4 | -0.2656 | 81.63 | -8370.14 | 0.9944 | 0.0201 | 0.1763 |
D | 2.62×10-4 | -0.2381 | 72.12 | -7287.24 | 0.9827 | 0.0428 | 0.3877 |
E | 2.22×10-4 | -0.2021 | 61.54 | -6250.80 | 0.9703 | 0.0427 | 0.4383 |
F | 1.21×10-4 | -0.1079 | 32.08 | -3182.47 | 0.9713 | 0.0309 | 0.3880 |
表8 拟合OA溶解度数据的三次多项式模型参数
Table 8 Parameters of cubic polynomial model for OA solubility data
溶剂体系 | a1 | b1 | c1 | d1 | R2 | RAD | RMSD×104 |
---|---|---|---|---|---|---|---|
A | 1.19×10-4 | -0.1090 | 33.42 | -3425.12 | 0.9640 | 0.0548 | 0.4123 |
B | 3.16×10-4 | -0.2903 | 89.10 | -9120.43 | 0.9901 | 0.0263 | 0.2462 |
C | 2.88×10-4 | -0.2656 | 81.63 | -8370.14 | 0.9944 | 0.0201 | 0.1763 |
D | 2.62×10-4 | -0.2381 | 72.12 | -7287.24 | 0.9827 | 0.0428 | 0.3877 |
E | 2.22×10-4 | -0.2021 | 61.54 | -6250.80 | 0.9703 | 0.0427 | 0.4383 |
F | 1.21×10-4 | -0.1079 | 32.08 | -3182.47 | 0.9713 | 0.0309 | 0.3880 |
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