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Citation: Lin Jiwen, Jiang Pengju. SYNTHESIS OF PARADICHLOROBENZENE BY SELECTIVE CATALYTIC CHLORINATION OF BENZENE[J]. Chinese Journal of Applied Chemistry, ;1986, 3(6): 58-60. shu

SYNTHESIS OF PARADICHLOROBENZENE BY SELECTIVE CATALYTIC CHLORINATION OF BENZENE

Lin Jiwen ,
Jiang Pengju

1.
East China Institute of Technology, Nanjing

Received Date: 5 February 1986
Available Online: 26 March 1986

By reacting of benzene with Chlorine in the Presence of Sb₂S₃-I₂ as a Catalyst,We have Obtained paradichlorobenzene under mild conditions in high yields and goodquality. The experiments indicate that the used catalyst has fair activities on the reactionof selective catalytic chlorination of benzene. In the fraction of dichlorobenzene theproportion of paradichlorobenzene is equal to 88% or so. The main factors which affect the reaction are reaction temperature, the chlorine-flow speed, the amount of the catalyst used and stirring efficiency. Experiments showthat the optimum reaction conditions are:(1) the molar ratio of chlorine to benzene:2.8:1, (2) chlorination temperature: 20~60℃, and (3) amounts of Sb₂S₃ and I₂: 1%and 0.2% of benzene weight, respectively.
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