Sorption and diffusion of SF6 in silicalite crystals

被引：18

作者：

MacDougall, H

Ruthven, DM

Brandani, S

机构：

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

[2] Univ Coll, Dept Chem Engn, London, England

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 1999年 / 5卷 / 04期

关键词：

D O I：

10.1023/A:1008956632056

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Kinetic and equilibrium data for sorption of SF6 in silicalite have been determined by the ZLC method. The equilibrium constants and adsorption energy are comparable with the values reported previously for SF6-NaX. Intracrystalline diffusion is relatively rapid with diffusivities of order 10(-7)- 10(-8) cm(2).s(-1) at temperatures in the range 30-90 degrees C. The implications for the use of SF6 as a probe molecule for assessing the integrity of silicalite membranes are considered.

引用

页码：369 / 372

页数：4

共 8 条

[1] Permeation of aromatic hydrocarbon vapors through silicalite-zeolite membranes [J].