Removal of Heteroaromatic Sulfur Compounds by a Non-noble Metal Fe Single-atom Adsorbent

作     者：LüYanjun Wen Jie Gong Qinmei Zhang Lianhong Li Airong Arshid Mahmood Ali Zhang Hui LüYanjun;Wen Jie;Gong Qinmei;Zhang Lianhong;Li Airong;Arshid Mahmood Ali;Zhang Hui

作者机构：College of Chemistry and Chemical EngineeringSouthwest Petroleum UniversityChengdu 610500 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2022年第24卷第2期

页      面：46-57页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

主　　题：single-atom adsorbent adsorptive desulfurization thermodynamics and kinetics heteroaromatic sulfur compounds 

摘      要：Sulfur-containing compounds(SCCs)must be removed from fuels before *** this study,a novel non-noble metal Fe single-atom adsorbent(SA-Fe/CN)was synthesized using a core-shell strategy and applied for the adsorptive removal of benzothiophene(BT)and dibenzothiophene(DBT).The adsorption isotherms,thermodynamics,kinetics,and adsorption-regeneration cycles of DBT and BT on SA-Fe/CN were ***-Fe/CN exhibited a significant capacity to adsorb DBT,and the isothermal equilibrium was well described by the Langmuir *** Gibbs free energy values were negative(ΔG^(0)0),indicating that the adsorption of DBT and BT was favored and *** adsorption process conformed to the pseudo-second-order kinetic model with high R^(2) values(0.9994,0.9987).The adsorption capacity of SA-Fe/CN for DBT and BT reached 163.21 mg/g and 90.35 mg/g,respectively,due to the highly active sites of the single atom and electrostatic interaction with the ***,SA-Fe/CN may be a promising adsorbent for SCC removal.