A temperature frequency response method for adsorption kinetics measurements

被引：13

作者：

Grenier, P ^{[1
]}

Malka-Edery, A ^{[1
]}

Bourdin, V ^{[1
]}

机构：

[1] CNRS, LIMSI, F-91403 Orsay, France

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 1999年 / 5卷 / 02期

关键词：

diffusion; kinetics measurements; frequency response; NaX zeolite; silicalite;

D O I：

10.1023/A:1008965223931

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：

A Frequency Response Method based on the infrared measurement of the sample temperature has been developed for adsorption kinetics measurements. It consists in modulating the experimental chamber volume at constant frequency. The complex ratio of the temperature response over the pressure response is independent of time but is a function of the frequency depending on all the kinetics parameters of the system. This method is accurate and allows to measure very fast kinetics. Its major drawback is that a spurious signal is observed at high pressure in absence of adsorption. The results obtained with silicalite-propane and NaX-carbon dioxide are compared with results obtained from other techniques (NMR, permeation, etc.).

引用

页码：135 / 143

页数：9

共 18 条

[1] Thermal frequency response method for the study of mass-transfer kinetics in adsorbents [J].