Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2337
Title: CO2 adsorption and dehydration behavior of LiNaX, KNaX, CaNaX and CeNaX zeolites
Authors: Erten, Yasemin
Güneş Yerkesikli, Alev
Çetin, Ali Emrah
Çakıcıoğlu Özkan, Seher Fehime
Erten, Yasemin
Güneş Yerkesikli, Alev
Çetin, Ali Emrah
Çakıcıoğlu Özkan, Seher Fehime
Izmir Institute of Technology. Chemical Engineering
Keywords: Carbon monoxide
Cation exchange
Co2 adsorption
Dehydration behavior
Issue Date: Dec-2008
Publisher: Springer Verlag
Source: Erten, Y., Güneş Yerkesikli, A., Çetin, A. E., and Çakıcıoğlu Özkan, S. F. (2008). CO2 adsorption and dehydration behavior of LiNaX, KNaX, CaNaX and CeNaX zeolites. Journal of Thermal Analysis and Calorimetry, 94(3), 715-718. doi:10.1007/s10973-008-9117-9
Abstract: In this study, NaX synthetic zeolite was modified by following the conventional cation exchange method at 70°C. 82, 81, 79 and 48% of sodium were exchanged with Li+, K+, Ca2+ and Ce3 +, respectively. Thermal analysis data obtained by TG/DSC was used to evaluate the dehydration behavior of the zeolites. The strongest interaction with water and the highest dehydration enthalpy (ΔH) value were found for Li-exchanged form and compared with the other forms. The temperature required for complete dehydration increased with decreasing cation size (cation size: K+>Ce3+>Ca2+>Na+>Li +). CO2 adsorption at 5 and 25°C was also studied and the virial model equation was used to analyze the experimental data to calculate the Henry's law constant, K o and isosteric heat of adsorption at zero loading Q st. K o values decreased with increasing temperature and the highest Qst was obtained for K rich zeolite. It was observed that both dehydration and CO2 adsorption properties are related to cation introduced into zeolite structure.
URI: http://doi.org/10.1007/s10973-008-9117-9
http://hdl.handle.net/11147/2337
ISSN: 1388-6150
1388-6150
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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