HRP-12催化剂上苯与直链烯烃的烷基化反应 Ⅱ. 失活动力学研究

采用连续操作的釜式反应器，利用悬浮态的负载杂多酸催化剂HRP-12上的烷基化反应的实验数据进行参数估值，确定了失活反应速率常数、失活反应活化能、活性保留函数的失活反应级数和烯烃摩尔浓度的失活反应级数，建立了苯与直链烯烃烷基化反应的失活动力学模型。模型表明：该失活反应对于活性保留函数是一级失活反应，对于烯烃摩尔浓度是二级失活反应。统计检验表明：所得失活动力学方程在显著性水平α=0.005下有较高的实验数据拟合精度和模型可信度。

Benzene alkylation with linear olefin over HRP-12 supported heteropolyacid catalyst:Ⅱ.Study on deactivation kinetics

A continuous mixed flow reactor, in which the supported heteropolyacid catalyst HPR-12 were suspended, was used in the experiment. Experimental data were adopted in parameters estimation for model of deactivation kinetics of benzene alkylation. Parameters, including deactivation rate constant, deactivation activation energy, exponent of retaining activity coefficient and reaction order in olefin molar concentration, were determined. They are 12.057 2 m3/(mol·s), 70552J/mol, 1 and 2 respectively. The deactivation kinetics model for benzene alkylation with linear olefine was thus established. Statistics test has shown that the deactivation kinetics equations are highly credible under the condition α=0.005 and well correspond with principle of benzene alkylation.