金属镧离子-二乙烯三胺体系催化磷酸二酯水解研究  

Study of hydrolysis of the phosphate diester catalyzed by La-diethylenetriamine system

作　　者：蔡述兰[1] 何锡阳[1] 冯发美[1] 谢家庆[1] 

机构地区：[1]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《化学研究与应用》2011年第12期1585-1588,共4页Chemical Research and Application

基　　金：绿色催化四川省高校重点实验室项目(LYJ01);四川理工学院科研启动项目(2009SK4)

摘　　要：利用紫外-可见分光光度法研究了金属离子La-二乙烯三胺体系催化双(对硝基苯酚)磷酸酯(BNPP)的作用机理。探索了不同催化反应条件对催化效率和体系稳定性的影响。结果表明,在金属离子La与二乙烯三胺具有适当的配比,反应体系在适当的酸度和温度条件下,催化体系对双(对硝基苯酚)磷酸酯的水解有显著的催化作用,并且催化体系稳定具有重现性,其催化活性物种是由金属离子La与二乙烯三胺形成的配合物。The mechanism of Bis（p-nitrophenyl）phosphate ester（BNPP）hydrolsis catalyzed by La-diethylenetriamine system was investigated by using an UV/VIS spetrophotometer.The catalytic efficiency and stability of La-diethylenetriamine system were studied on different conditions.It was found that the catalytic system showed high catalytic activity and stability in BNPP catalytic hydrolysis under proper proportion of La and diethylenetriamine,appropriate pH and temperature of the solution.The results also showed that the reactive active species was the complex made of La and diethylenetriamine ligand.

关 键 词：金属配合物 催化 磷酸二酯 水解 机理 

分 类 号：O643.3[理学—物理化学]