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http://dx.doi.org/10.14478/ace.2017.1031

Ammonia Adsorption Capacity of Zeolite X with Different Cations  

Park, Joonwoo (Energy & Environment R&D Center in E&Chem Solution Corporation)
Seo, Youngjoo (Energy & Environment R&D Center in E&Chem Solution Corporation)
Ryu, Seung Hyeong (Energy & Environment R&D Center in E&Chem Solution Corporation)
Kim, Shin Dong (Energy & Environment R&D Center in E&Chem Solution Corporation)
Publication Information
Applied Chemistry for Engineering / v.28, no.3, 2017 , pp. 355-359 More about this Journal
Abstract
Zeolite X with Si/Al molar ratio = 1.08~1.20 was produced using a hydrothermal synthesis method. Ion-exchanged zeolite X samples were then prepared by using metal nitrate solutions containing $Mg^{2+}$ or $Cu^{2+}$. For all zeolite X samples, X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectrometry (EDS) were used to identify the change in crystal structure. The analysis of ammonia adsorption capability of zeolite X samples was conducted through the ammonia temperature-programmed desorption ($NH_3$-TPD) method. From XRD results, the prepared zeolite X samples maintained the Faujasite (FAU) structure regardless of cation contents in zeolite X, but the crystallinity of zeolite X containing $Mg^{2+}$ and $Cu^{2+}$ cations decreased. The distribution of cation contents in zeolite X was identified via EDS analysis. $NH_3$-TPD analysis showed that the $NH_3$ adsorption capacity of $Mg^{2+}$- and $Cu^{2+}$-zeolite X were 1.76 mmol/g and 2.35 mmol/g, respectively while the $Na^+$-zeolite X was 3.52 mmol/g ($NH_3/catalyst$). $Na^+$-zeolite X can thus be utilized as an adsorbent for the removal of ammonia in future.
Keywords
zeolite X; ammonia; adsorption; $Cu^{2+}$; $Mg^{2+}$;
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Times Cited By KSCI : 3  (Citation Analysis)
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