Zeolites possess the unique ability to act as shape-selective catalysts due exclusively to their microporous, honeycomb-like network structures. The functional pore size of these critical cavities gen

Question

Zeolites possess the unique ability to act as shape-selective catalysts due exclusively to their microporous, honeycomb-like $3D$ network structures. The functional pore size of these critical cavities generally varies within a highly specific range. What is the standard upper limit of the pore size of typical catalytic zeolites in picometers ($	ext{pm}$)?

Prashant Kotian · Accepted Answer

Correct answer: 740. The catalytic reactions occurring inside zeolites depend strictly upon the precise dimensions of their internal pores and cavities. Generally, the size of these pores is rigidly constrained between and . Thus, only molecules small enough to enter and exit this upper limit can participate in the reaction.

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