聚醚桥连二异羟肟酸配合物催化羧酸酯水解的动力学研究  

Kinetic study on the hydrolysis of PNPP catalyzed by polyether-bridged dihydroxamic acid complexes

作　　者：刘富安[1] 李建章[1] 黄生田[1] 冯发美[1] 李鸿波[2] 秦圣英[2] 

机构地区：[1]四川理工学院化学系,四川自贡643000 [2]四川大学化学学院,四川成都610064

出　　处：《化学研究与应用》2005年第4期507-510,共4页Chemical Research and Application

基　　金：国家自然科学基金资助项目(20072025);四川省教育厅重点科研项目(2003A182)

摘　　要：Four polyether-bridged dihydroxamic acids transition-mental complexes were used as mimic hydrolytic enzyme model catalyzing carboxylic acid esters (PNPP)hydrolysis.The kinetics and the mechanism on PNPP hydrolysis catalyzed by these complexes were investigated.The kinetic mathematical model of PNPP cleavage catalyzed by these complexes was proposed.The results showed that the rate for the PNPP hydrolysis catalyzed by the complexes became larger as the increase of pH of the buffer solution and four complexes exhibited high activity in the PNPP catalytic hydrolysis.Four polyether-bridged dihydroxamic acids transition - mental complexes were used as mimic hydrolytic enzyme model catalyzing carboxylic acid esters （PNPP） hydrolysis. The kinetics and the mechanism on PNPP hydrolysis catalyzed by these complexes were investigated. The kinetic mathematical model of PNPP cleavage catalyzed by these complexes was proposed. The results showed that the rate for the PNPP hydrolysis catalyzed by the complexes became larger as the increase of pH of the buffer solution and four complexes exhibited high activity in the PNPP catalytic hydrolysis.

关 键 词：聚醚桥连二异羟肟酸 过渡金属配合物 PNPP水解 动力学 

分 类 号：O643.321[理学—物理化学]