ZLC Measurements under non-linear conditions

被引：41

作者：

Brandani, S ^{[1
]}

Jama, MA ^{[1
]}

Ruthven, DM ^{[1
]}

机构：

[1] Univ Maine, Dept Chem Engn, Orono, ME 04469 USA

来源：

CHEMICAL ENGINEERING SCIENCE | 2000年 / 55卷 / 07期

关键词：

diffusion; zeolite X; p-xylene; benzene; ZLC;

D O I：

10.1016/S0009-2509(99)00411-X

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Experimental zero length column (ZLC) response curves are presented for benzene and p-xylene in silicalite over a range of conditions under which the isotherm varies from nearly linear to highly favorable. It is shown that the analytic approximation suggested by Brandani (Chemical Engineering Science, 53, 1998, 2791-2798) provides a good representation of the experimental curves and that this model allows the extraction of reliable values for the diffusional time constant even under non-linear conditions. The conditions under which it is possible to use the simplified linear analysis without introducing major errors are also examined. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1205 / 1212

页数：8

共 5 条

[1] Effects of nonlinear equilibrium on zero length column experiments [J].