Ethyne is passed through a hot tube containing organo-nickel catalyst to produce
isoprene
polythene
ethanol
benzene
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During a process called cyclic polymerization, ethyne is passed through red hot iron tube to produce benzene. As you can see, the formula for ethyne is C₂H₂, and that of benzene is C₆H₆, polymerizing or tripling the molecule of ethyne gives benzene.
Passing ethyne (also known as acetylene) through a hot tube containing organo-nickel catalyst results in the production of benzene. This reaction is known as the "nickel carbide" or "cyclization" reaction.
Ethyne
It produces Benzene because when we pass ethyne(C2H2) through a hot red tube, the tripple bond of the ethyne breaks thus hydrogen will therefore be added in place of that which will turn ethyne into benzene.
When ethyne (acetylene) is passed through a hot tube containing an organo-nickel catalyst, it undergoes a process called trimerization, resulting in the formation of benzene (C₆H₆).
The reaction is as follows:
3C₂H₂ (ethyne) → C₆H₆ (benzene)
