文献类型：期刊文献

英文题名：MASS-TRANSFER EFFECTS ON KINETICS OF NONIDEAL LIQUID-PHASE ETHYL TERT-BUTYL ETHER FORMATION

作者：SUNDMACHER, K; ZHANG, RS; HOFFMANN, U

机构：[1]E CHINA UNIV SCI & TECHNOL,UNILAB,SHANGHAI 200237,PEOPLES R CHINA

年份：1995

卷号：18

期号：4

起止页码：269

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:A1995RR27800007)】；

语种：英文

摘要：Ethyl tert-butyl ether (ETBE) is an alternative fuel oxygenate that can be produced in the liquid phase by addition of ethanol to isobutene catalyzed by sulfonic acid ion exchange resins. A generalized Langmuir-Hinshelwood rate expression is formulated in terms of the liquid phase activities of the reactants that is quasi-autocatalytic due to ethanol. This microkinetic model is combined with the generalized Maxwell-Stefan equations for a detailed investigation of the influence of multicomponent mass transfer limitations inside the macropores of the heterogeneous catalyst. The model is used for revision of experimental rate data for ETBE synthesis in the literature. The analysis reveals that reverse diffusion of isobutene can occur by strong interaction with ethanol and the catalyst effectiveness factor can exceed unity.