On the chromatographic measurement of equilibrium isotherms using large concentration steps

被引：10

作者：

Brandani, S ^{[1
]}

机构：

[1] UCL, Dept Chem Engn, London WC1E 7JE, England

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2005年 / 11卷 / Suppl 1期

关键词：

adsorption equilibrium; breakthrough experiment; integral steps;

D O I：

10.1007/s10450-005-5929-0

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：

The measurement of equilibrium isotherms from the dynamic response of an adsorption column subject to a large pulse or step change in inlet concentration requires the simultaneous measurement of concentration and flowrate. Based on the observation that for a single sorbate-carrier system the concentration and velocity transients are coupled, a procedure to estimate the true column outlet carrier flowrate from the measured concentration signal is derived, which is consistent with an overall mass balance of the carrier gas. The proposed approach has been validated using experimental breakthrough curves for CO(2) on UOP HiSIV 3000 pellets for integral step changes up to 75% in CO(2) concentration.

引用

页码：231 / 235

页数：5

共 11 条

[1]

[Anonymous], VAPOR PHASE CHROMATO

[2] Measurement of adsorption equilibrium by the zero length column (ZLC) technique part 1: Single-component systems [J].