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Adsorption Characteristics of Toluene Vapor According to Pore Structures of Zeolite 5A Modified with Hydrochloric Acid  

Lee, Song-Woo (Department of Chemical Engineering, Pusan National University)
Bae, Sang-Kyu (Department of Chemical Engineering, Pusan National University)
Kwon, Jun-Ho (Department of Chemical Engineering, Pusan National University)
Na, Young-Soo (Segye Chem.Co., Ltd.)
An, Chang-Doeuk (Segye Chem.Co., Ltd.)
Yoon, Young-Sam (Nakdong River Water Environment Laboratory, National Institute of Environmental Research)
Song, Seung-Koo (Department of Chemical Engineering, Pusan National University)
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Abstract
This study is to investigate the correlation of pore structures of Zeolite 5As modified with acid and their adsorption capacity of toluene vapor using the dynamic adsorption method. The experimental results showed that the modification with acid allowed more micropores and enlarged the existing pores. Toluene vapor was mainly adsorbed on the surface of pores over $15\;{\AA}$ in diameter. The equilibrium adsorption capacity of toluene vapor of the modified Zeolite 5As was in the range of $15{\sim}70\;mg/g$ and the equilibrium adsorption capacity was increased to f times than that of the Zeolite 5A. The correlation between the total cumulative surface area and the equilibrium adsorption capacity was hard to say linear. The correlation in diameter between the cumulative surface area in the range of over $15\;{\AA}$ and the equilibrium adsorption capacity gate the highest correlation factor of 0.997.
Keywords
Zeolite 5A; Toluene Vapor; Adsorption; Pore Structure;
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