非等温催化剂颗粒上活性组分的最佳分布Ⅰ──连串反应体系

Optimal Activity Distribution in Nonisothermal Catalyst Pellet I---Series Reaction System

讨论了一维多孔性催化剂颗粒在非等温情况下活性组分的最佳分布。活性组分集中在离颗粒中心某一距离的无限薄层上可得到最大的选择性Ｓ＿（ｍａｘ）．该最佳位置决定于非等温效应、传质阻力以及反应速率的相对大小．文中针对连串反应体系，运用数学方法证明了颗粒催化剂活性组分非均匀分布时的最大反应选择性。结果表明，当分布函数为δ－ｄｉｒａｃ时，连串反应的选择性最大，并讨论了活性组分位置对选择性的影响和体系的多重态．

Optimal activity distribution to selectivity in nonisothermal Porous heterogeneous catalyst for series reaction networks were derived by using mathematical method. The results howed that the optimal distribution function for selectivity is δ-function. Meanwhile,theeffect of optimal positlon on selectivity and multistability were discussed.