Abstract: 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.

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。