Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6497
Title: Adsorption characteristics of lead-, barium- and hydrogen-rich clinoptilolite mineral
Authors: Çakıcıoğlu Özkan, Seher Fehime
Ülkü, Semra
Özkan, Seher Fehime Çakıcıoğlu
Ülkü, Semra
Izmir Institute of Technology. Chemical Engineering
Keywords: Barium
Carbon dioxide
Adsorption
Hydrogen
water vapor
Issue Date: 2003
Publisher: SAGE Publications Inc.
Source: Çakıcıoğlu Özkan, F., and Ülkü, S. (2003). Adsorption characteristics of lead-, barium- and hydrogen-rich clinoptilolite mineral. Adsorption Science and Technology, 21(4), 309-317. doi:10.1260/026361703322405042
Abstract: The carbon dioxide and water vapour adsorption properties of local clinoptilolite-rich material, both as the original and as lead-, barium- and hydrogen-rich forms, were examined. The lead- and barium-rich forms were prepared by treatment of the original clinoptilolite with Pb(NO3)2 and BaCl2 respectively, while the hydrogen-rich form was prepared by NH4Cl and heat treatment. Water and CO2 adsorption experiments were conducted in a volumetric system under static conditions, with low-pressure adsorption data being used for the characterization of the natural, Pb-rich, Ba-rich and H-rich clinoptilolite samples. Although the existence of barium-exchange was not noted, an appreciable decrease in CO2 adsorption was observed with the Pb-rich and H-rich forms due to a decrease in the electrostatic interaction between the surface and the adsorbate. Application of the Dubinin-Astakhov equation to the water adsorption data established the existence of micropores of different sizes that exhibited different adsorption mechanisms.
URI: http://doi.org/10.1260/026361703322405042
http://hdl.handle.net/11147/6497
ISSN: 0263-6174
0263-6174
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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