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How To Prepare Benzene From Acetylene

Prepare benzene from acetylene, write equation. Explain the Friedel


Benzene is a highly useful chemical compound with a wide range of applications in industry. It is commonly used as a solvent, as a starting material for the production of plastics, and as an additive in gasoline. In this article, we will discuss how to prepare benzene from acetylene, a process known as the benzene synthesis.

Step 1: Preparation of Acetylene

The first step in the benzene synthesis is the preparation of acetylene. This can be done by reacting calcium carbide with water, which produces acetylene gas. The reaction is highly exothermic and must be carried out under controlled conditions to prevent explosions.

Step 2: Reacting Acetylene with Hydrogen

Once the acetylene has been prepared, it is reacted with hydrogen gas in the presence of a catalyst such as palladium. This reaction is known as the hydrogenation of acetylene and produces ethylene, which is then further reacted to form benzene.

Step 3: Formation of Benzene

The final step in the benzene synthesis is the formation of benzene from ethylene. This reaction is carried out over a zeolite catalyst at high temperatures and pressures. The process involves the dehydrogenation of ethylene to form benzene, which is then separated from the other products of the reaction.

Tips for Benzene Synthesis

– Always use caution when working with acetylene, as it is highly flammable and can be explosive. – Ensure that the reaction conditions for the hydrogenation of acetylene are carefully controlled to prevent the formation of unwanted byproducts. – Use high-quality catalysts and reactants to ensure the best possible yield of benzene.

Benefits of Benzene Synthesis

The benzene synthesis is an important process in the chemical industry as it allows for the production of large quantities of benzene from readily available starting materials. This can help to reduce the cost of production and increase the availability of this important compound.


In conclusion, the benzene synthesis is a complex chemical process that involves the careful preparation and reaction of acetylene and hydrogen gas. By following the tips outlined in this article, it is possible to produce high-quality benzene with a high yield.