酯化法合成丙酸甲酯的动力学研究  

Reaction kinetics of synthesized methyl propionate by esterification

作　　者：李柏春[1,2] 张静雅 王凤竹 张文林[1,2] 李春利 

机构地区：[1]河北工业大学化工学院,天津300130 [2]化工节能过程集成与资源利用国家地方联合工程实验室,天津300130

出　　处：《石油化工》2017年第12期1468-1472,共5页Petrochemical Technology

摘　　要：以强酸型阳离子交换树脂为催化剂,在间歇反应釜中对丙酸和甲醇酯化合成丙酸甲酯的反应进行了研究。考察了合成条件对反应的影响,确定了适宜的反应条件为:C100FLH阳离子交换树脂为催化剂、搅拌转速200 r/min、催化剂用量为丙酸质量的10%,反应温度343.15 K,酸醇摩尔比1.4∶1。建立拟均相模型并对实验数据线性拟合,得到333.15~348.15 K下酯化合成丙酸甲酯的反应动力学方程为r=55 792.236exp(-37 164.789/RT)(c_Ac_B-c_Cc_D/K),式中,K=exp(1 676.94/T-2.796 6),为工业化合成丙酸甲酯提供了动力学数据。The kinetics for the synthesis of methyl propionate from methanol and propionic acid over cation exchange resin catalyst with strong acidity was studied in a batch stirred tank reactor. The effects of the synthesis conditions on the reaction were investigated. The results showed that the optimum reaction conditions were： C 100FLH acidic cation exchange resin as catalyst, stirring speed 200 r/min, catalyst dosage 10%（w）（based on the propionic acid）, reaction temperature 343.15 K, and n（propionic acid） ： n（methanol） 1.4 ： 1. The Pseudo-Homogeneous model was established and the experimental data was linearly fitted to obtain the reaction kinetic equation for the esterification of methyl propionate from 333.15 K to 348.15 K： r = 55 792.236exp（-37 164.789/RT）（CACs - CcCD/K）, K = exp（1 676.94/T- 2.796 6）, it provides the support of kinetics for synthetic methyl propionate in the industry.

关 键 词：丙酸甲酯 动力学 强酸型阳离子交换树脂 丙酸 甲醇 

分 类 号：TQ031.2[化学工程]