What is meant by 'shape-selective catalysis' of reactions ?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Catalysis**: Catalysis refers to the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst. Catalysts work by providing an alternative reaction pathway with a lower activation energy.

2. **Introduction to Shape-Selective Catalysis**: Shape-selective catalysis is a specific type of catalysis where the structure of the catalyst plays a crucial role in determining which reactions can occur. This is primarily influenced by the pore structure of the catalyst.

3. **Role of Pore Structure**: The pore structure of a catalyst can selectively allow certain reactant molecules to enter while excluding others based on size and shape. This selectivity can lead to different products being formed from the same reactants depending on their molecular dimensions.

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