119th General Meeting of the KCS

Type Poster Presentation
Area 재료화학
Room No. 포스터발표장
Time 4월 21일 (금요일) 13:00~14:30
Code MAT.P-341
Subject Hydrophobicity/hydrophilicity of adsorbents and solvent polarity effect on liquid-phase adsorption of aromatics over a metal–organic framework and activated carbon
Authors Biswa Nath Bhadra, 정성화*
경북대학교 화학과, Korea
Abstract Hydrophilicity/hydrophobicity of adsorbents and solvent polarity are effective parameters for the adsorption aromatics which were investigated via liquid phase adsorption over a metal-organic framework (MOF, MIL-101) and activated carbon (AC). Aromatics having low acidity or basicity, such as thiophene, pyrrole, and nitrobenzene were selected as adsorbates for this study. Adsorption tests were carried out for selected adsorbates over MIL-101 and AC to estimate possible applications of the adsorbents in liquid-phase adsorptions the adsorbents in adsorptive desulfurization (ADS), adsorptive denitrogenation (ADN), and water purification, respectively. With decreasing the solvent polarity, MIL-101 adsorbed all the three adsorbates more effectively than AC and the reverse was observed for AC. Analyses of hydrophobicity indexes for MIL-101 and AC revealed with the effect of the hydrophilicity of MIL-101 and hydrophobicity of AC on the adsorption of tested sorbates. The superior adsorptions of the adsorbates over MOF and AC might be explained by polar-interactions and hydrophobic-interactions respectively. Moreover, it can be concluded that adsorptions in non-aqueous phases including ADS and AND, hydrophilic MOFs are more effective than hydrophobic AC. Finally, it is necessary to increase the hydrophobicity of a MOF for the adsorptions of aromatics from water, to explain the applicability of MOFs in water purification.
E-mail bbhadra07@yahoo.com