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Citation: Chen Songying. THE DEPENDENCE OF KINETICS PARAMETERS OF HYDROGENATION REACTION ON THE PROPERTIES OF ACTIVE SITES OF Pd/Al₂O₃[J]. Acta Physico-Chimica Sinica, ;1989, 5(06): 760-764. doi: 10.3866/PKU.WHXB19890624 shu

THE DEPENDENCE OF KINETICS PARAMETERS OF HYDROGENATION REACTION ON THE PROPERTIES OF ACTIVE SITES OF Pd/Al₂O₃

Chen Songying

1.
Institute of Coal Chemistry; Academia Sinica Taiyuan

Received Date: 3 May 1988
Available Online: 15 December 1989

By dynamic technique, the dependence of adsorption and surface reaction rate coefficients for α-methyl styrene hydrogenation on the properties of active sites of Pd/Al_2O_3 catalyst was studied. The results showed that there were two kinds of active sites on the surface of Pd/Al_O_3. Their number N_t, active frequency AF and the number of active atoms in an active site m were obtained and their variations were also studied. The coefficients of adsorption equilibrium, overall reaction rate and adsorption and surface reaction rate coefficients for a single active site κ~*, κ_0~*, κ_0~* and κ_r were calculated. Their changes with Pd content were as same as that of active frequency AF except for κ_r and the change of κ_r was consistent with that of m value. In summary, the kinetic parameters of a catalytic reaction depend not only on the number of active sites, but also on some properties of the active site, such as AF and m value.
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THE DEPENDENCE OF KINETICS PARAMETERS OF HYDROGENATION REACTION ON THE PROPERTIES OF ACTIVE SITES OF Pd/Al2O3

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通讯作者: 陈斌, bchen63@163.com

THE DEPENDENCE OF KINETICS PARAMETERS OF HYDROGENATION REACTION ON THE PROPERTIES OF ACTIVE SITES OF Pd/Al₂O₃