The effect of convective flow induced by an external pressure gradient on the performance of a biporous pellet has been studied. The effectiveness factor of such a pellet depends on the convective flow parameter, λ, the Thiele modulus, and α, which characterizes the ratio of macropore to micropore diffusion times. Considerable enhancement in effectiveness due to convection occurs, especially when macropore diffusion is the controlling step. © 1994, American Chemical Society. All rights reserved.

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