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Benzene can be synthesized via the following methods:
1. Catalytic reforming: This is the most common industrial method for producing benzene. In this process, a mixture of hydrocarbons is passed over a catalyst at high temperature and pressure. The catalyst converts some of the hydrocarbons into benzene.
2. Pyrolysis: Benzene can also be produced by pyrolysis, which is the thermal decomposition of organic matter in the absence of oxygen. When organic matter is heated to high temperatures, it breaks down into smaller molecules, including benzene.
3. Coal tar distillation: Benzene is a component of coal tar, which is a by-product of the production of coke from coal. Benzene can be extracted from coal tar by distillation.
4. Dehydrogenation of cyclohexane: Benzene can be produced by the dehydrogenation of cyclohexane, which is a cyclic hydrocarbon. This process is usually carried out using a catalyst such as platinum or palladium.