Diffusion, Reaction and Deactivation in Pore Networks

摘要

This paper presents a theoretical approach to describe diffusion, first order irrevaersible reaction and deactivation in pore newtorks. For this, the concept of concentration wieght factors is introduced which allow th concentration of a component in a node to be expressed as a function of the concentration in adjacent nodes. Further, layered pore networks are introduced which have a "layer upon layer" architecture iwth intricate node connectivity within a layer and among adjacent layers but poor or non-existent connectivity beyond the adjacent layers. It is found that certain layered pore strcutures as encountered in zeolites yield explicit analytical matrix solutions while layered pore networks as encounterd in amorphous catalysts yield Riccati matrix equatons that the be solved sequentially.