CIESC Journal ›› 2020, Vol. 71 ›› Issue (11): 5178-5187.DOI: 10.11949/0438-1157.20200186
• Catalysis, kinetics and reactors • Previous Articles Next Articles
Hao XU(),Yang LI,Chengkang XIA,Ruining HE,Yun ZOU,Zhangfa TONG()
Received:
2020-02-25
Revised:
2020-05-24
Online:
2020-11-05
Published:
2020-11-05
Contact:
Zhangfa TONG
通讯作者:
童张法
作者简介:
徐浩(1993—),男,硕士研究生,基金资助:
CLC Number:
Hao XU,Yang LI,Chengkang XIA,Ruining HE,Yun ZOU,Zhangfa TONG. Kinetics of esterification of glycerol with acetic acid catalyzed by pyridine bisulfate ionic liquid[J]. CIESC Journal, 2020, 71(11): 5178-5187.
徐浩,李洋,夏成康,何瑞宁,邹昀,童张法. 吡啶硫酸氢盐离子液体催化甘油与乙酸酯化反应动力学[J]. 化工学报, 2020, 71(11): 5178-5187.
温度/℃ | k1 | k2 | k3 |
---|---|---|---|
65 | 7.9×10-3 | 6.7×10-3 | 3.5×10-3 |
80 | 11.1×10-3 | 8.9×10-3 | 5.1×10-3 |
95 | 13.8×10-3 | 12.1×10-3 | 6.9×10-3 |
110 | 17.8×10-3 | 16.5×10-3 | 9.3×10-3 |
Table 1 Reaction rate constants at different temperatures
温度/℃ | k1 | k2 | k3 |
---|---|---|---|
65 | 7.9×10-3 | 6.7×10-3 | 3.5×10-3 |
80 | 11.1×10-3 | 8.9×10-3 | 5.1×10-3 |
95 | 13.8×10-3 | 12.1×10-3 | 6.9×10-3 |
110 | 17.8×10-3 | 16.5×10-3 | 9.3×10-3 |
ki | ki0/min-1 | Ea,i/(kJ·mol-1) |
---|---|---|
k1 | 7.17 | 19.10 |
k2 | 14.19 | 21.58 |
k3 | 13.78 | 23.25 |
Table 2 Pre-exponential factor and activation energy of G-AA esterification
ki | ki0/min-1 | Ea,i/(kJ·mol-1) |
---|---|---|
k1 | 7.17 | 19.10 |
k2 | 14.19 | 21.58 |
k3 | 13.78 | 23.25 |
催化剂种类 | 最佳反应条件 | 甘油转化率 | 产物收率 | 反应活化能 |
---|---|---|---|---|
Amberlyst-15[ | t=110℃, MR=9∶1, ccat=82.86 mmol H+/L | αG=97.1% | YMAG=7.6% | E1=57.26 kJ·mol-1 |
YDAG=46.3% | E2=31.87 kJ·mol-1 | |||
YTAG=43.2% | E3=13.90 kJ·mol-1 | |||
hetropoly acid[ | t=110℃, MR=9∶1, ccat=8.51 mmol H+/L | αG=98.2% | YMAG=23.4% | E1=24.99 kJ·mol-1 |
YDAG=59.6% | E2=28.10 kJ·mol-1 | |||
YTAG=15.2% | E3=51.73 kJ·mol-1 | |||
pyridine bisulfate ionic liquid (本文) | t=110℃, MR=6∶1, ccat=129.04 mmol H+/L | αG=98.5% | YMAG=11.5% | E1=19.10 kJ·mol-1 |
YDAG=46.6% | E2=21.58 kJ·mol-1 | |||
YTAG=40.4% | E3=23.25 kJ·mol-1 |
Table 3 Performances comparison of different catalysts for G-AA esterification
催化剂种类 | 最佳反应条件 | 甘油转化率 | 产物收率 | 反应活化能 |
---|---|---|---|---|
Amberlyst-15[ | t=110℃, MR=9∶1, ccat=82.86 mmol H+/L | αG=97.1% | YMAG=7.6% | E1=57.26 kJ·mol-1 |
YDAG=46.3% | E2=31.87 kJ·mol-1 | |||
YTAG=43.2% | E3=13.90 kJ·mol-1 | |||
hetropoly acid[ | t=110℃, MR=9∶1, ccat=8.51 mmol H+/L | αG=98.2% | YMAG=23.4% | E1=24.99 kJ·mol-1 |
YDAG=59.6% | E2=28.10 kJ·mol-1 | |||
YTAG=15.2% | E3=51.73 kJ·mol-1 | |||
pyridine bisulfate ionic liquid (本文) | t=110℃, MR=6∶1, ccat=129.04 mmol H+/L | αG=98.5% | YMAG=11.5% | E1=19.10 kJ·mol-1 |
YDAG=46.6% | E2=21.58 kJ·mol-1 | |||
YTAG=40.4% | E3=23.25 kJ·mol-1 |
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