摘要
A copper-centred metal-organic framework material MOF-101 with 2-bromine terephthalic acid as ligands was synthesized by solvothermal method at 70 ℃ and modified by loading Ag^+to improve the selective adsorption performance.The MOF-101 and Ag^+/MOF-101 prepared were characterised by powder X-ray diffraction,X-ray fluo re scence,Fourier trans fo rm infrared spectroscopy,scanning electro n microscopy,and thermogravimetric analysis.The adsorptive desulphurisation was quantified by adsorbing dibenzothiophene(DBT)from model oils.The loading of Ag^+enhanced the deep adsorptive desulfurization capacity fo r DBT and significantly weaken the adsorption competitiveness of toluene.As a result,the DBT concentration of model oil was reduced from 50 ppms to 10.2 ppms.Possible understandings were put forward to explain the adsorption performance of Ag^+/MOF-101.The kinetics and isotherm data can be well-described by the pseudo-second-order kinetic model and the Langmuir model.
A copper-centred metal-organic framework material MOF-101 with 2-bromine terephthalic acid as ligands was synthesized by solvothermal method at 70 ℃ and modified by loading Ag^+to improve the selective adsorption performance.The MOF-101 and Ag^+/MOF-101 prepared were characterised by powder X-ray diffraction,X-ray fluo re scence,Fourier trans fo rm infrared spectroscopy,scanning electro n microscopy,and thermogravimetric analysis.The adsorptive desulphurisation was quantified by adsorbing dibenzothiophene(DBT)from model oils.The loading of Ag^+enhanced the deep adsorptive desulfurization capacity fo r DBT and significantly weaken the adsorption competitiveness of toluene.As a result,the DBT concentration of model oil was reduced from 50 ppms to 10.2 ppms.Possible understandings were put forward to explain the adsorption performance of Ag^+/MOF-101.The kinetics and isotherm data can be well-described by the pseudo-second-order kinetic model and the Langmuir model.
