文献类型：期刊文献

中文题名：吡啶氯化反应中催化剂失活动力学的研究

英文题名：Study on Catalyst Deactivation Kinetics of Pyridine Chlorination

作者：许柳松[1];曾作祥[1];薛为岚[1];覃建华[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2005

卷号：21

期号：2

起止页码：117

中文期刊名：化学反应工程与工艺

外文期刊名：Chemical Reaction Engineering and Technology

收录：CSTPCD;;EI(收录号：2005269184913);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：五氯吡啶;催化剂;动力学;数学模型;积分反应器;平行连串失活;失活机理

外文关键词：pentachloropyridine; catalyst; kinetics; deactivation; mathematics model

摘要：采用积分反应器,研究了吡啶氯化反应中催化剂失活动力学。在常压下测定了在350～390℃,氯气与吡啶摩尔比8～12时的反应速度,建立了失活动力学方程,估算出主反应级数、活化能,以及失活级数和失活因子。统计检验结果表明,该失活动力学方程能很好地拟合实验数据。由所得模型,催化剂失活不受反应物浓度影响,但反应物和产物均能积炭而引起催化剂失活,因而推测催化剂的失活机理为平行连串失活。
The catalyst deactivation kinetics of pyridine chlorination was investigated in an integral fixbed reactor. The kinetic data were measured under atmospheric pressure and at 350-390°C, chlorine/pyridine mole ratio 8-12. Then the main reaction order, activation energy, deactivation order and deactivation factor were evaluated, and a deactivation kinetic model was established. Statistical analysis results showed that this model fitted with experimental data well. It could be deduced from deactivation equation that the catalyst deactivation was unaffected by the concentration of reactants, but both reactants and products coking induced the catalyst deactivation in the system. Hence we suggested that the deactivation mechanism of the catalyst was parallel and series deactivation without pore diffusion resistance.