一、前言固体催化剂通常是多孔的,反应物必须进入孔中与催化剂表面活性中心接触,反应才能迅速发生。反应产物必须扩散出去才能维持正常进行。因此孔结构对催化剂的性能如活性、强度、选择性、表面利用率和中毒难易等都有影响。这样,对一个催化反应,在活性组份确定后,选择适当的载体并使制成的催化剂具有最佳孔结构是非常重要的。本文将叙述在受内扩散影响的催化反应中,选择催化剂孔结构的 I. INTRODUCTION Solid catalysts are usually porous and the reactants must enter the pores and come into contact with the surface active sites of the catalyst to allow the reaction to take place rapidly. The reaction product must diffuse out to maintain normal operation. Therefore, the pore structure of the catalyst properties such as activity, strength, selectivity, surface utilization and poisoning have an impact. Thus, for a catalytic reaction, it is important to select the appropriate support and to make the resulting catalyst have the best pore structure after the active components are identified. This article describes the choice of catalyst pore structure in a catalytic reaction that is affected by internal diffusion