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Which of the following statements about shape-selective catalysis is true?

Option: 1

It is a type of homogeneous catalysis

Option: 2

It relies on the size and shape of the catalyst particles to control the reaction pathway

Option: 3

 It is only effective for gas-phase reactions


Option: 4

It does not rely on steric effects to control the reaction pathway

Answers (1)


Shape-selective catalysis involves the use of catalyst particles with specific sizes and shapes to control the reaction pathway of a particular reaction. The catalyst's size and shape can affect the access of reactants to the active sites on the surface of the catalyst, leading to selective reaction pathways. This technique is often used in solid-state catalysis, and can be effective for both gas-phase and liquid-phase reactions In contrast, homogeneous catalysis refers to a type of catalysis where the catalyst is present in the same phase as the reactants, usually in solution. Homogeneous catalysis typically relies on steric effects and electronic effects to control the reaction pathway. The catalyst molecule interacts with the reactants, leading to a change in the reaction pathway and increased reaction rate. Homogeneous catalysis can be highly efficient and selective, but it requires careful design of the catalyst molecule and reaction conditions.

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