【摘要】 在溶剂热合成条件下,利用含有胺基基团的有机羧酸配体4,4’-二胺基-[1,1’-联苯]-3,3’,5,5’-四甲酸（H4L）与Mg²⁺离子反应,制备了一例三维金属有机框架{[Mg₂（L）（DMA）（H₂O）₂]·2DMA·H₂O}_n（Mg-MOF,DMA=N,N-二甲基乙酰胺）。通过X射线单晶衍射、元素分析、热重分析等确定了Mg-MOF的结构和稳定性,并深入探究了其CO₂吸附和催化转化性能。结果表明:Mg-MOF属于单斜晶系,P2₁/n空间群,a=1.399 88（15） nm,b=1.400 49（15） nm,c=1.768 57（19） nm,β=94.307（2）°。Mg-MOF具有4-连接的（4²·8⁴）-ant拓扑网,含有胺基基团修饰的一维孔道,而且在298 K和100 kPa条件下表现出优异的CO₂/CH₄、CO₂/CO吸附选择性（分别为18.7～19.9、8.9～9.5）,以及高效催化转化CO₂与环氧化合物生成环状碳酸酯的性能。更多还原

【Abstract】 Under solvothermal synthetic conditions,this study employed the organic carboxylic acid ligand containing amino groups,4,4’-diamino-[1,1’-biphenyl]-3,3’,5,5 ’-tetracarboxylic acid（H₄L）,to react with Mg²⁺ions,resulting in the preparation of a novel three-dimensional metal-organic framework:{[Mg₂（L）（DMA）（H₂O）₂]·2DMA·H₂O}_n（Mg-MOF,DMA=N,N-dimethyl acetamide）.The structure and stability of Mg-MOF were determined by singlecrystal X-ray diffraction,elemental analysis,thermogravimetric analysis,and so on,and the CO₂ adsorption and catalytic conversion properties were also deeply investigated.The results indicate that Mg-MOF crystallizes in the monoclinic system with space group P2₁/n,unit cell parameters a=1.399 88（15） nm,b=1.400 49（15） nm,c=1.768 57（19）nm,β=94.307（2）°.Mg-MOF shows a 4-connected（4²·8⁴）-ant topological net,possessing one-dimensional channels decorated with amino groups.It reveals excellent adsorption selectivity for CO₂ over CH4 and CO（18.7-19.9 and 8.9-9.5,respectively）,as well as highly efficient catalytic performance for the conversion of CO₂ and epoxides into cyclic carbonates at the condition of 298 K and 100 kPa.CCDC:2468229.更多还原