Chen Lei, Liu Ying, Cao Zhi, Yang Gaodong, Zhou Aidong, Zhou Zheng
School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China.
ACS Omega. 2020 Sep 29;5(40):25810-25818. doi: 10.1021/acsomega.0c03116. eCollection 2020 Oct 13.
Kinetics and thermodynamics of esterification by a cation-exchange resin in an intensified fixed-bed reactor was studied systematically. The resin type, catalyst loading, volume flow rate, initial molar ratio, temperature, and catalyst reusability were studied and optimized. The nonideality of the reaction system was corrected by the UNIFAC group contribution method. The Δ , Δ , and Δ of the reaction were acquired by two methods. The pseudo-homogeneous (PH) model and the Langmuir-Hinshelwood-Hougen-Watson (LHHW) model were adopted to simulate the kinetic process. The result indicated that the LHHW model was better suited to simulate the kinetic process than the PH model.
系统研究了阳离子交换树脂在强化固定床反应器中进行酯化反应的动力学和热力学。对树脂类型、催化剂负载量、体积流速、初始摩尔比、温度和催化剂可重复使用性进行了研究和优化。采用UNIFAC基团贡献法校正反应体系的非理想性。通过两种方法获得了反应的Δ 、Δ 和Δ 。采用拟均相(PH)模型和朗缪尔-欣谢尔伍德-霍根-华生(LHHW)模型模拟动力学过程。结果表明,LHHW模型比PH模型更适合模拟动力学过程。