Alcohols can be converted to various types of gasoline (petrol) by shape-selective catalysts

Options

A. Maltase
B. ZSM-5
C. Lindlar's catalyst
D. Ziegler Natta catalyst

Answer

To solve the question of which catalyst can convert alcohols into gasoline (petrol), we will analyze the given options step by step.

### Step 1: Understand the Question
The question asks for a shape-selective catalyst that can convert alcohols into gasoline. Shape-selective catalysts are those that can selectively catalyze reactions based on the size and shape of the reactant molecules.

### Step 2: Analyze the Given Catalysts
We have four options to consider: Maltase, JSM-5, Lindlar catalyst, and Ziegler-Natta catalyst.

### Step 3: Evaluate Each Catalyst

1. **Maltase**:
- Maltase is an enzyme that catalyzes the hydrolysis of maltose into glucose. It is primarily involved in biochemical processes and is not used for converting alcohols into gasoline.
- **Conclusion**: Maltase is **not** the correct answer.

2. **JSM-5**:
- JSM-5 is a type of zeolite catalyst that is known for its shape-selective properties. It is used in the conversion of alcohols to gasoline through a process called dehydration and cracking.
- JSM-5 contains silica and alumina, which provide acidic sites that facilitate the conversion of various alcohols into gasoline.
- **Conclusion**: JSM-5 is a suitable catalyst for converting alcohols into gasoline.

3. **Lindlar Catalyst**:
- The Lindlar catalyst is used to convert alkynes into cis-alkenes in organic chemistry. It consists of palladium on calcium carbonate and is not used for converting alcohols into gasoline.
- **Conclusion**: Lindlar catalyst is **not** the correct answer.

4. **Ziegler-Natta Catalyst**:
- The Ziegler-Natta catalyst is primarily used in the polymerization of alkenes to produce polyethylenes. It is not used for the conversion of alcohols into gasoline.
- **Conclusion**: Ziegler-Natta catalyst is **not** the correct answer.

### Step 4: Final Conclusion
After evaluating all the options, the only catalyst that can convert alcohols into gasoline is **JSM-5**.

### Answer:
**JSM-5** is the catalyst used to convert alcohols into gasoline.

---