Effect of catalyst on benzene chlorination process

Chlorobenzene is an aromatic organic compound with the chemical formula C۶H۵Cl. Thiscolorless and flammable liquid is a common solvent and a widely used intermediate in themanufacture of other chemicals. Benzene chlorination is of considerable commercial importanceand has therefore received wide attention. Chlorobenzene is used as a raw material in theproduction of a new safe explosive based on ۲,۴-dinitroanisole (DNAN) and pesticidesdichlorodiphenyltrichloroethane (DDT), and also as an intermediate in the preparation ofpharmaceutical raw materials, herbicides. The choice of a catalyst for liquid phase chlorination ofbenzene depends on the desired product, operating conditions and cost. Considering the risks ofthe chlorination process, choosing the right catalyst can save the time of the process and the amountof chlorine gas consumed. For this reason, the available and widely used iron chloride catalyst wasused. And the effect of this catalyst on the time and efficiency of the chlorobenzene preparationprocess was investigated. And the result of these experiments is that with increasing time in theamount of catalyst and constant temperature, the production efficiency of chlorobenzene is reducedand the reaction is carried out towards the production of higher chlorinated benzenes. Also, withthe increase of the catalyst, the amount of chlorobenzene production decreases