乙基叔丁基醚的合成反应动力学  

Kinetic study of synthesis of ethyl tert-butyl ether

作　　者：吕爱梅[1] 郝兴仁[1] 

机构地区：[1]中国石化齐鲁分公司研究院,山东淄博255400

出　　处：《化工进展》2008年第3期453-456,共4页Chemical Industry and Engineering Progress

摘　　要：研究了以乙醇和碳四中的异丁烯为原料,QRE型阳离子交换树脂为催化剂合成乙基叔丁基醚(ETBE)的反应动力学,采用R-E型反应机理建立了反应动力学模型,求出了醚化反应速率方程。结果表明:异丁烯与乙醇醚化反应速率与乙醇浓度呈零级关系,与异丁烯、ETBE浓度可按拟一级进行数据处理;反应速率常数符合阿仑尼乌斯方程。经统计检验,所得醚化反应速率方程是高度显著的、可信的,可用于反应器的模拟计算。The kinetics of the synthesis of ethyl tertiary-butyl ether（ETBE） from ethanol and isobutene in C4 streams with cation exchange resin as catalysts was investigated. A kinetics model based on Redeal-Eley （R-E） reaction mechanism was established, which showed excellent agreement with experimental results. Reaction rate has no relation with the concentration of ethanol and pseudo-first order kinetics could be used to process concentrations of isobutene and ETBE in the reaction mixtures.

关 键 词：乙基叔丁基醚 醚化 反应动力学 阳离子交换树脂 

分 类 号：O621[理学—有机化学]