基于纳米材料的静态吸附脱硫进展

摘要

综述了近年来新型纳米吸附剂静态吸附脱除燃料油中二苯并噻吩(DBT)的作用机理及最新研究进展.重点分析了金属骨架材料(MOFs)、分子印迹聚合物(MIPs)、石墨烯基材料、活性炭基材料(AC)、介孔微孔材料等不同吸附剂的研究现状,从脱硫机理角度探讨不同改性方法对吸附脱硫效果的影响.通过比较这些吸附脱硫材料的优缺点,展望未来吸附脱硫材料的发展趋势和前景,为开发更优良的吸附剂用于吸附脱除DBT提供一些研究思路.文章指出吸附脱除燃料油中的DBT目前的主要问题是吸附剂的重复利用、与燃料油接触容易产生污染和吸附剂与燃料油分离过程中造成的损耗,这些短板也是吸附脱硫法大规模工业应用的主要障碍,因此吸附材料的选择、改性方法以及机理研究是吸附脱除DBT的主要研究方向.%This paper reviewed the latest development of novel adsorbents for dibenzothiophene(DBT) removal and their corresponding adsorption mechanisms. Herein we focus on the research progress of different new adsorbents such as metal organic framework materials(MOFs),molecularly imprinted polymers(MIPs),graphene based materials,active carbon based materials(AC)and mesoporous materials. Then the influence of the surface modification of various materials on the adsorption capacity was discussed from the perspective of desulphurization mechanism. Furthermore,we analyzed the advantages and disadvantages of these adsorptive desulfurization materials which may provide a direction for the exploration of efficient adsorbents for the removal of DBT. The main problems that impede the large-scale industrial application of the adsorbents in the removal of DBT from fuel oil are their recycling,the contamination with fuel oil and the loss caused by the separation. Therefore, the selection of the adsorbents,their modification,and the mechanism investigation will be the main topics for DBT removal by adsorption.