Adsorption equilibrium and column dynamics of VOCs on MCM-48 depending on pelletizing pressure

被引：46

作者：

Shim, WG

Lee, JW

Moon, H ^{[1
]}

机构：

[1] Chonnam Natl Univ, Fac Appl CHem Engn, Kwangju 500757, South Korea

[2] Seonam Univ, Dept Chem Engn, Namwon 590170, South Korea

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2006年 / 88卷 / 1-3期

关键词：

adsorption; column dynamics; isotherm; MCM-48; VOCs;

D O I：

10.1016/j.micromeso.2005.08.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Structural characteristics of pelletized MCM-48 were investigated using X-ray diffraction, nitrogen adsorption and desorption. The adsorption equilibrium data were also obtained for seven pure vapors (acetone, benzene, cyclohexane, hexane, methanol, MEK and toluene) at 300.15 K for different pelletized MCM-48 using a gravimetric method, Adsorption equilibria of various VOCs on pelletized MCM-48 were classified as type IV in accord with IUPAC recommendations. To correlate the collected experimental data, the hybrid isotherm equations such as Langmuir-Sips and inhomogeneous DA were used. It was found that the adsorbed amount of nitrogen and VOCs is greatly affected by pelletizing pressure. A mathematical model of a fixed bed pelletized MCM-48 system was successfully employed to describe the adsorption breakthrough curves of VOCs. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：112 / 125

页数：14

共 32 条

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