文献类型：会议论文

英文题名：Kinetics for benzene plus ethylene reaction in near-critical regions

作者：Shi, YF; Gao, Y; Dai, YC; Yuan, WK

机构：[1]E China Univ Sci & Technol, UNILAB, Res Ctr Chem React Engn, Shanghai 200237, Peoples R China

会议论文集：16th International Symposium on Chemical Reaction Engineering

会议日期：SEP 10-13, 2000

会议地点：KRAKOW, POLAND

语种：英文

外文关键词：alkylation; benzene; near-critical region; reaction rate; ethylene; kinetics

摘要：Based on the determined reaction rates of alkylation of benzene with ethylene to produce ethyl benzene, kinetic expressions are studied in all the five near-critical regions surrounding the critical point: supercritical fluid, low-pressure vapor, vapor-liquid two phase, high- and low-pressure liquid. Both hyperbolic model and power-law model have been applied for this purpose. Models are searched to fit all the single-phase regions, and for the four single regions separately. The results are very unsatisfactory. The authors then worked out the modified models with the aid of a crossover function and have obtained better results. Although the reaction behaviors are quite complicated in the near-critical regions, a power-law model combined with the crossover function can be used to fit the experimental data with a much higher regression coefficient. (C) 2001 Elsevier Science Ltd. All rights reserved.