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Discussion

The effectiveness factor of a catalyst particle is

  • A.the conversion achieved in the reactor
  • B.the actual rate over the intrinsic rate
  • C.the proportion of the pellet that is wetted
  • D.the ratio of the surface area to volume

Answer: B

A value near one means the whole pellet is being used and a small value means only the outer layer is. It falls as the particle grows or the intrinsic rate rises. One means the whole pellet is used. Small values point to larger particles being the fault.

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