用改进的一点配置法计算多孔催化剂有效因子*(I)方法的建立  

Modified One Point Collocation Method for Determining Effectiveness Factors of Porous Catalysts: (1) A New Method Development

作　　者：陈尚伟[1] 冯学愚[2] 张超[2] 

机构地区：[1]四川绵阳经济技术高等专科学校 [2]四川轻化工学院轻工工程系

出　　处：《四川轻化工学院学报》1999年第1期10-15,共6页Journal of Sichuan Institute of Light Industry and Chemical Technology

基　　金：四川省教委自然科学科研项目

摘　　要：用改进的一点配置法求解多孔催化剂颗粒扩散－反应边值问题，从而获得催化剂颗粒有效因子的解。改进的一点配置法将整个一维区间划分为几个子区间，然后在每个子区间内用一点配置法求解非线性扩散－反应边值问题。与一级不可逆反应精确解比较，用本文方法计算结果的精度十分令人满意。A modified one point collocation method for solving a boundary value problem in porous ca talyst pellet is presented Moreover, approximate solutions of effectiveness factor for catalyst pellets are obtained By applying modified one point collocation method, the entire one dimensional domain is divided up into several equidestant subdomain and nonlinear diffusion reaction problems in a porous catalyst pellet are solved by using one point collocation method within each subdomain Compared with a exact analytical solution of first order irreversible reaction, culculated results of presented method are satisfactory in a larger scope.

关 键 词：有效因子 非线性扩散 一点配置法 催化剂 

分 类 号：O643.36[理学—物理化学] TQ426[理学—化学]