Name few catalysts used in aromatization reaction.

Explanation

To answer the question regarding the catalysts used in aromatization reactions, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Aromatization**: Aromatization is the process of converting non-aromatic compounds into aromatic compounds. For a compound to be classified as aromatic, it must be cyclic, planar, and follow Huckel's rule, which states it should have \(4n + 2\) π electrons.

2. **Identifying Catalysts**: Several catalysts are commonly used in aromatization reactions. Some of these catalysts include:
- Chromium(III) oxide (Cr₂O₃)
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