Modeling and simulation of an acid-functionalized silicalite-1 membrane reactor for xylene isomerization

被引：2

作者：

Yeong, Yin Fong ^{[1
]}

Abdullah, Ahmad Zuhairi ^{[1
]}

Ahmad, Abdul Latif ^{[1
]}

Bhatia, Subhash ^{[1
]}

机构：

[1] Univ Sains Malaysia, Sch Chem Engn, Perai 14300, Pulau Pinang, Malaysia

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2010年 / 75卷 / 02期

关键词：

Modeling; Simulation; Acid-functionalized silicalite-1 membrane; m-Xylene isomerization; Membrane reactor; PLUG-FLOW PATTERN; P-XYLENE; SEPARATION; DIFFUSION;

D O I：

10.1016/j.seppur.2010.07.018

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model representing m-xylene isomerization reaction and subsequent separation of xylene isomers in a catalytic membrane reactor is proposed. Propylsulfonic acid-functionalized silicalite-1 and arenesulfonic acid-functionalized silicalite-1 membranes were used as the catalytic membranes. A triangular reaction scheme was used as the reaction model while m-xylene conversion, p-xylene selectivity, p-xylene yield, p-xylene flux and p-/o-xylene separation factor under isothermal condition were calculated from the model. The simulated results were analyzed and showed good agreement with the experimental data within an error of +/-5%. The effects of p-xylene diffusivity on m-xylene conversion, p-xylene flux and p-/o-xylene separation factor were investigated. Simulated results showed that the increase in p-xylene flux enhanced m-xylene conversion. p-Xylene yield increased with an increase in m-xylene conversion. m-Xylene conversion by arenesulfonic acid functionalized silicalite-1 membrane was higher compared to that of propylsulfonic acid functionalized silicalite-1 membrane due to higher diffusion rate of p-xylene. The removal of p-xylene through the membrane contributed to higher m-xylene conversion in both of the membranes. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：183 / 192

页数：10

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