Sorption of hydrocarbons in silicalite-1 studied by intelligent gravimetry

被引：13

作者：

Ban, HY

Gui, JZ

Duan, LH

Zhang, XT

Song, LJ

Sun, JL ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

[2] Liaoning Univ Petr & Chem Technol, Coll Petrochem Engn, Liaoning 113001, Peoples R China

[3] Univ Edinburgh, Dept Chem, Edinburgh EH9 3JJ, Midlothian, Scotland

来源：

FLUID PHASE EQUILIBRIA | 2005年 / 232卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

silicalite-1; adsorption; diffusion; thermodynamics; TG;

D O I：

10.1016/j.fluid.2005.03.024

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Adsorption and desorption isotherms, adsorption kinetics and TG (thermogravimetry) curves of cyclopentane, cyclohexane, benzene, and p-xylene in silicalite-1 have been measured by using intelligent gravimetric analyzer (IGA). The thermodynamic and kinetic properties of the systems, such as the heats of sorption, free energies of sorption, entropy changes, and the diffusion coefficients, have been derived from these measurements. The results suggest that the size and configuration of sorbate molecules play a critical role on the adsorption and diffusion behaviour of the systems. Tiny changes in the size and the shape of sorbate molecules can result in a significant difference in the adsorption properties. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：149 / 158

页数：10

共 32 条

[1]

Barrer R. M., 1978, ZEOLITE CLAY MINERAL

[2] THE MFI(ZSM-5)/SORBATE SYSTEMS - COMPARISON BETWEEN STRUCTURAL, THEORETICAL AND CALORIMETRIC RESULTS .1. THE MFI/P-XYLENE SYSTEM [J].