Adsorption properties of a Pd/γ-Al2O3 catalyst using inverse gas chromatography

被引：47

作者：

Díaz, E ^{[1
]}

Ordóñez, S ^{[1
]}

Vega, A ^{[1
]}

Coca, J ^{[1
]}

机构：

[1] Univ Oviedo, Dept Chem Engn & Environm Technol, E-33006 Oviedo, Spain

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2004年 / 70卷 / 1-3期

关键词：

inverse gas chromatography; palladium; alumina; adsorption isotherms; interaction parameters;

D O I：

10.1016/j.micromeso.2004.03.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The adsorption properties of a commercial Pd/Al2O3 catalyst were studied and compared with those of the Al2O3 support of the same specific surface area. Inverse gas chromatography (IGC) was used to determine the adsorption isotherms of five n-alkanes (C-8-C-12) in the 200-230 degreesC temperature range. Moreover, heats of adsorption, solubility coefficients and free energy of adsorption, are also reported. Interaction parameters of polar molecules with the stationary phase have also been determined and compared with those for the n-alkanes. Experiments with both the reduced and oxidized catalyst have been carried out by IGC and the results compared with those obtained by temperature programmed reduction (TPR) experiments. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：109 / 118

页数：10

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