An equation of axial non-homogeneous voidage distributions of solid catalysts has been derived from a generalization of one-dimensional axial dispersion model.

• 从一维轴向扩散基本方程导出了催化剂颗粒轴向平均空隙率分布式方程，以此方程为基础求出固体颗粒团聚频率和颗粒轴向扩散系数。