Kinetics Study on Diphenylmethane Synthesis Catalyzed by ZnCl2/Clay-SA01

Abstract

Abstract:

Diphenylmethane was synthesized in the presence of a new environmentally friendly catalyst ZnCl₂/Clay-SA₀₁. The effects of loading amount, the molar ratio of benzene to benzyl chloride, amount of catalyst used, reaction temperature and time were investigated. Based on these experiments, the kinetics and mechanism of the reaction were studied. The results show that the reaction is the second order kinetics at 303—318 K. The kinetic equation obtained is r=k［ZnCl₂/Clay-SA₀₁］^0.8［C₆H₆］［C₆H₅CH₂Cl］ , with an apparent activation energy 88.6 kJ/mol. However, the reaction is the zero order kinetics at 328—353 K. The kinetic equation obtained is r=k［ZnCl₂/Clay-SA₀₁］^0.1 with the apparent activation energy 52.8 kJ/mol. The model should be used to provide a theoretical explanation of reaction mechanism and to be applied to the development of industrial process.

Key words: ZnCl₂/Clay-SA₀₁; Diphenylmethane; Catalytic synthesis; Kinetics, ZnCl2/Clay-SA₀₁, Diphenylmethane, Catalytic synthesis, Kinetics

CLC Number:

O643.1

TrendMD:

WU Yun, Zhaorigetu, JIA Mei-Lin, Agula. Kinetics Study on Diphenylmethane Synthesis Catalyzed by ZnCl₂/Clay-SA₀₁[J]. Chem. J. Chinese Universities, 2005, 26(12): 2336.

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Kinetics Study on Diphenylmethane Synthesis Catalyzed by ZnCl₂/Clay-SA₀₁

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