Nonequimolal counterdiffusion

Implications of Nonequimolal Counterdiffusion for Effectiveness Factors When there is a change in the number of gas phase species on reaction, there has to be at steady state a net molar flux either into or out of a porous catalyst. When bulk diffusion is responsible for all or even a reasonably significant fraction of the total mass transfer, the pressure gradient through the pellet will usually be negligible, but an increase in Ihe... 

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