The effect of HCl treatment on water vapor adsorption characteristics of clinoptilolite rich natural zeolite

被引：105

作者：

Cakicioglu-Ozkan, F ^{[1
]}

Ulku, S ^{[1
]}

机构：

[1] Izmir Inst Technol, Fac Engn, Dept Chem Engn, TR-35430 Izmir, Turkey

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2005年 / 77卷 / 01期

关键词：

clinoptilolite; water vapor; adsorption; acid treatment; dealumination;

D O I：

10.1016/j.micromeso.2004.08.013

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this study, water vapor adsorption properties of the clinoptilolite rich zeolite tuff, from Bigadic (Turkey), and its modified forms were examined. The modified forms were obtained by treating the tuff with HCl solutions (0.032, 0.16, 0.32, 1.6 or 5 M) at 25, 40, 75 and 100 degreesC for 3 h. Infrared spectroscopy and water vapor adsorption were used for the characterization of the zeolites. Langmuir, BET and Dubinin-Raduschevich methods were applied in the analysis of water vapor adsorption data. Applications of Dubinin Raduschevich equation to the water adsorption data displayed that the super-micropore volume was not very sensitive to acid treatment. It was found out that the Langmuir surface area and ultra-micropore volume depend on the degree of the removal of aluminum from the structure. (C) 2004 Elsevier Inc. All rights reserved.

引用

页码：47 / 53

页数：7

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