氨基修饰MIL-101金属-有机骨架化合物的制备、表征及其对Knoevenagel反应的催化性能

采用后处理法将氨基接枝到具有开放金属位的金属-有机骨架化合物MIL-101上,利用XRD、N2吸附—脱附、元素分析等手段对材料进行了表征,并考察了其对Knoevenagel反应的催化活性.结果表明,在不破坏母体骨架结构的同时,氨基被成功地引入MIL-101骨架结构中;氨基修饰的MIL-101对Knoevenagel反应具有很高的催化活性:当催化剂量为0.05 g、反应时间为1 h时,苯甲醛的转化率可以达到97%,并且材料在循环使用过程中不存在氨基流失的情况.

Amino-functionalized Metal-organic Framework:Synthesis,Characterization and Catalytic Activity for Knoevenagel Reaction

Metal-organic framework with coordinatedly unsaturated metal site,MIL-101,was functionalized with amino group through a post-synthetic method. The material was characterized by XRD,N2adsorption-desorption measurement,elemental analysis,and then tested as a catalyst for the Knoevenagel reaction. The characterization result shows that amino groups were successfully incorporated into the framework of MIL-101 without destroying the pore structure. Amino-functionalized MIL-101 was proved to be highly active for Knoevenagel reaction. When the catalyst amount is 0. 05 g,reaction time is 1h,the conversion of benzaldehyde reached 97%. Furthermore,this catalyst did not suffer from a leaching problem during the course of catalysis.