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-340
Subject Adsorption and removal of organic sulfur- and nitrogen-containing aromatics from fuel with with scandium-triflate/metal-organic frameworks
Authors Nazmul Abedin Khan, 정성화*
경북대학교 화학과, Korea
Abstract Benzothiophene (BT), dibenzothiophene (DBT), quinoline (QUI) and indole (IND) are the most common organic sulfur- and nitrogen-containing aromatics that exist in liquid fuel as contaminant. These compounds should be removed prior to utilization of liquif fuel in various means. Metal-organic frameworks (MOFs), with the incorporation of scandium-triflate (Sc(OTf)3) have been investigated to adsorb benzothiophene (BT), dibenzothiophene (DBT), quinoline (QUI) and indole (IND) from liquid fuel. A remarkable improvement in the adsorption capacity (about 65% based on the weight of adsorbents; 90% based on the surface area of the adsorbents) was observed with the Sc(OTf)3/MOFs compared to the virgin MOFs for the adsorption of BT from liquid fuel. The basic QUI was also adsorbed preferentially onto the acidic Sc(OTf)3/MOFs. However, non-supported Sc(OTf)3 showed negligible adsorption capacities. The improved adsorptive performance for BT, DBT and QUI might be derived from acid–base interactions between the acidic Sc(OTf)3 and basic adsorbates. On the other hand, the Sc(OTf)3, loaded on MOFs, reduced the adsorption capacity for neutral IND due to lack of interaction between the neutral adsorbate and acidic adsorbent and the reduced porosities of the modified adsorbents. The reusability of the adsorbents was found satisfactory up to the fourth run. Based on the result, it is suggested that metal-triflates, such as Sc(OTf)3 can be effective sites for the adsorption of various basic organosulfur and organonitrogen compounds.
E-mail nazmul_1012@yahoo.com