The importance of diffusion in a catalyst are increased by ____________________?
Correct answer: D. All A., B. and C.
- A. Large catalyst particle size
- B. An active surface of the catalyst
- C. Small pore diameter
- D. All A., B. and C.
Explanation
Diffusion becomes more important when particles are larger, pores are narrower, or the catalyst is more active and consumes reactant rapidly near the external surface. Each condition increases the internal concentration gradient or diffusion resistance.
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