Reaction kinetics of isopropyl palmitate synthesis

doi:10.1016/j.cjche.2015.05.004

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (8): 1335-1339.DOI: 10.1016/j.cjche.2015.05.004

• 催化、动力学与反应工程 • 上一篇下一篇

Reaction kinetics of isopropyl palmitate synthesis

Lili Fu^1,2, Yinge Bai³, Gaozhi Lü⁴, Denggao Jiang¹

1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
2 Henan Province Product Quality Supervision and Inspection Center, Zhengzhou 450004, China;
3 Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, China;
4 Henan EPRI Hitech Group Co., Ltd, Zhengzhou 450052, China

收稿日期:2014-10-17 修回日期:2015-04-27 出版日期:2015-08-28 发布日期:2015-09-26
通讯作者: Denggao Jiang

Reaction kinetics of isopropyl palmitate synthesis

Lili Fu^1,2, Yinge Bai³, Gaozhi Lü⁴, Denggao Jiang¹

1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
2 Henan Province Product Quality Supervision and Inspection Center, Zhengzhou 450004, China;
3 Institute of Process Engineering, Chinese Academy of Science, Beijing 100190, China;
4 Henan EPRI Hitech Group Co., Ltd, Zhengzhou 450052, China

Received:2014-10-17 Revised:2015-04-27 Online:2015-08-28 Published:2015-09-26
Contact: Denggao Jiang

摘要/Abstract

摘要： In this study, the kinetics of isopropyl palmitate synthesis including the reaction mechanism was studied based on the two-step noncatalyticmethod. The liquid-phase diffusion effect on the reaction process was eliminated by adjusting the stirring rate. The results showed that the two-step reaction followed a tetrahedral mechanism and conformed to second-order reaction kinetics. Nucleophilic attack on the carbonyl carbon afforded an intermediate, containing a tetrahedral carbon center. The intermediate ultimately decomposed by elimination of the leaving group, affording isopropyl palmitate. The experimental data were analyzed at different temperatures by the integral method. The kinetic equations of the each step were deduced, and the activation energy and frequency factor were obtained. Experiments were performed to verify the feasibility of kinetic equations, and the result showed that the kinetic equations were reliable. This study could be very significant to both industrial application and determining the continuous production of isopropyl palmitate.

关键词: Isopropyl palmitate, Reaction kinetics, Chemical reaction, Preparation, Chloridization, Palmitic acid

Abstract: In this study, the kinetics of isopropyl palmitate synthesis including the reaction mechanism was studied based on the two-step noncatalyticmethod. The liquid-phase diffusion effect on the reaction process was eliminated by adjusting the stirring rate. The results showed that the two-step reaction followed a tetrahedral mechanism and conformed to second-order reaction kinetics. Nucleophilic attack on the carbonyl carbon afforded an intermediate, containing a tetrahedral carbon center. The intermediate ultimately decomposed by elimination of the leaving group, affording isopropyl palmitate. The experimental data were analyzed at different temperatures by the integral method. The kinetic equations of the each step were deduced, and the activation energy and frequency factor were obtained. Experiments were performed to verify the feasibility of kinetic equations, and the result showed that the kinetic equations were reliable. This study could be very significant to both industrial application and determining the continuous production of isopropyl palmitate.

Key words: Isopropyl palmitate, Reaction kinetics, Chemical reaction, Preparation, Chloridization, Palmitic acid

Lili Fu, Yinge Bai, Gaozhi Lü, Denggao Jiang. Reaction kinetics of isopropyl palmitate synthesis[J]. Chinese Journal of Chemical Engineering, 2015, 23(8): 1335-1339.

Lili Fu, Yinge Bai, Gaozhi Lü, Denggao Jiang. Reaction kinetics of isopropyl palmitate synthesis[J]. Chin.J.Chem.Eng., 2015, 23(8): 1335-1339.

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Reaction kinetics of isopropyl palmitate synthesis

Reaction kinetics of isopropyl palmitate synthesis

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