胶束催化的假相理论模型  

Pseudophase Models of Micellar Catalysis

作　　者：阮科[1] 赵振国[1] 马季铭[1] 

机构地区：[1]北京大学化学与分子工程学院,100871

出　　处：《化学通报》2000年第12期18-25,11,共9页Chemistry

基　　金：国家自然科学基金!资助项目 (2 9733110 )

摘　　要：介绍并比较了胶束催化的两种理论模型 :假相离子交换 ( Pseudophase ion exchange,PIE)模型和 Poisson- Boltzmann方程 ( PBE)模型。 PIE模型通过计算各反应物在两相间的分配 ,成功地解释了总一级反应速率常数 k1随各参数的变化和胶束表面的反离子竞争结合。 PBE模型完善了 PIE模型 ,考虑了胶束的尺寸和分布 ,胶束与离子间的静电作用和其它特殊作用 ,可解释一些 PIE模型无法解释的实验现象。Two theoretical models of micellar catalysis are introduced and compared, which are Pseudophase Ion Exchange(PIE) and Poisson\|Boltzmann (PBE) models. The PIE model explains successfully the variation of total first\|order reaction rate k 1 with the parameters through the calculation of the distribution of reaction agents between the two pesudophases, and the competition bound of counter ions at the micelles surface. The results fit most of the reactions of micellar catalysis or inhibition. PBE improves the PIE model, and it considers the size and distribution of micelles, electrostatic and other specific interactions between the micelles and ions. PBE model explains some experimental results which can not be done by the PIE model.

关 键 词：胶束催化 离子交换假相模型 PBE模型 

分 类 号：O648[理学—物理化学] O643.32[理学—化学]