Thermodynamic and kinetic study on the catalysis of tributyl aconitate by Amberlyst-15 in a cyclic fixed-bed reactor

IF 1.6 4区工程技术 Q3 Chemical Engineering

International Journal of Chemical Reactor Engineering Pub Date : 2024-05-27 DOI:10.1515/ijcre-2023-0222

Ailin Deng, Qiqi Ma, Yunxiang Hu, Xin Zhang, S. Yang, Nianhua Song, Wuji Sun, Xuejun Liu, Jianbing Ji

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Abstract

Tributyl aconitate is a new type of alternative plasticizer to phthalates. Amberlyst-15 was used to catalyze the esterification of aconitic acid and n-butanol for the preparation of tributyl aconitate in a cyclic fixed-bed reactor. The influence of the reaction conditions on the conversion was investigated. The results showed that the conversion of aconitic acid increased significantly with the rise of temperature and catalyst loading. The reaction conditions were optimized as: temperature: 115 °C; initial mass ratio of AA and n-butanol: 1:4; catalyst loading: 25 %; reaction absolute pressure: 85 kPa; volume flow rate: 30 mL min−1. Thermodynamics and kinetics of the reaction was studied. The non-ideality of the reaction system was rectified using the UNIFAC group contribution method. The kinetic process was simulated using the pseudo-homogeneous (PH) model, Eley-Rideal (E-R) model, and Langmuir-Hinshelwood-Hougen-Watson (LHHW) model. The results revealed that the E-R model exhibited superior suitability in simulating the kinetic process.

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Amberlyst-15 在循环固定床反应器中催化丙酮酸三丁酯的热力学和动力学研究

丙酮酸三丁酯是邻苯二甲酸酯的一种新型替代增塑剂。在循环固定床反应器中，使用 Amberlyst-15 催化了乌头酸和正丁醇的酯化反应，以制备丙酸三丁酯。研究了反应条件对转化率的影响。结果表明，随着温度和催化剂装填量的增加，乌头酸的转化率显著提高。反应条件优化为：温度温度：115 °C；AA 和正丁醇的初始质量比：1:4；催化剂装填量：25 %；反应绝对压力：85 °C：25 %；反应绝对压力：85 kPa；体积流量：30 mL min-1：30 mL min-1。对反应的热力学和动力学进行了研究。使用 UNIFAC 组贡献法纠正了反应体系的非理想性。使用伪均质（PH）模型、Eley-Rideal（E-R）模型和 Langmuir-Hinshelwood-Hougen-Watson （LHHW）模型模拟了动力学过程。结果表明，E-R 模型在模拟动力学过程中表现出更优越的适用性。

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来源期刊

International Journal of Chemical Reactor Engineering 工程技术-工程：化工

CiteScore

2.80

自引率

12.50%

发文量

107

审稿时长

3 months

期刊介绍： The International Journal of Chemical Reactor Engineering covers the broad fields of theoretical and applied reactor engineering. The IJCRE covers topics drawn from the substantial areas of overlap between catalysis, reaction and reactor engineering. The journal is presently edited by Hugo de Lasa and Charles Xu, counting with an impressive list of Editorial Board leading specialists in chemical reactor engineering. Authors include notable international professors and R&D industry leaders.

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