基于TiO_2的绿色多相催化剂催化CO_2与环氧化合物偶联反应  

TiO_2-based green heterogeneous catalysts for the cycloaddition of CO_2 to epoxides

作　　者：刘靖[1] 王安琪[1] 景欢旺[1] 

机构地区：[1]兰州大学化学化工学院、功能有机分子化学国家重点实验室,甘肃兰州730000

出　　处：《催化学报》2014年第10期1669-1675,共7页

基　　金：国家自然科学基金(21173106,20973086)~~

摘　　要：金属离子掺杂纳米TiO2(M-TiO2,M=Zn2+,Cu2+,Co2+,Mn2+,Ni2+)在CO2与环氧化合物的偶联反应中表现出较高的催化活性.反应以四正丁基碘化铵(TBAI)为共催化剂,在无溶剂条件下进行.考察了反应温度、反应时间和CO2压力在Zn-TiO2/TBAI体系中对反应性能的影响.作为无毒的多相催化剂,Zn-TiO2可循环使用5次,其催化活性没有明显降低.TiO2 doped with metal ions （M-TiO2, M=Zn2＋, Cu2＋, Co2＋, Mn2＋, or Ni2＋） was investigated as a heter-ogeneous catalyst for the coupling reaction of CO2 and epoxides, using tetrabutylammonium iodide （TBAI） as a co-catalyst under solvent-free conditions. These compounds were found to exhibit high catalytic activities. The effects of reaction temperature, reaction time, and CO2 pressure on the effec-tiveness of a Zn-TiO2/TBAI catalyst system were also examined. Zn-TiO2 represents a nontoxic, heterogeneous catalyst that can be reutilized up to five times without a significant loss of catalytic activity.

关 键 词：二氧化碳 环氧化合物 环碳酸酯 多相催化剂 掺杂纳米二氧化钛 

分 类 号：O643.32[理学—物理化学]