文献类型：期刊文献

中文题名：在Pd/γ-Al_2O_3催化剂上液相苯加氢的反应动力学

英文题名：Reaction Kinetics of Liquid-phase Benzene Hydrogenation on Pd/γ-Al_2O_3

作者：周志明[1];程振民[1];李卓[1];袁渭康[1]

机构：[1]华东理工大学联合化学反应工程研究所,上海200237

年份：2004

卷号：30

期号：1

起止页码：1

中文期刊名：华东理工大学学报（自然科学版）

外文期刊名：Journal of East China University of Science and Technology

收录：CSTPCD;;EI(收录号：2004138091813);Scopus;北大核心:【北大核心2000】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金资助项目(No.20106005);中国石化总公司资助项目(合同号201085)。

语种：中文

中文关键词：液相;苯加氢;环己烷;反应动力学;催化剂;液相

外文关键词：benzene hydrogenation; cyclohexane; kinetics; catalyst

摘要：采用Pd/γ-Al2O3催化剂,在排除扩散影响的条件下,研究了液相苯催化加氢制环己烷的反应动力学。实验测定了反应温度、氢气压力、反应物浓度等因素对反应速率的影响,反应温度研究的范围为393～453K,氢气压力为1.1～3.8MPa。研究结果表明,液相苯加氢反应对苯表现为零级,对氢压表现为一级,反应活化能为43.88kJ/mol。运用该动力学模型对在较低苯浓度下进行的加氢反应进行了预测,预测值与实验值能较好地吻合。
Liquid-phase benzene hydrogenation to cyclohexane was studied over Pd/γ-Al_2O_3 catalyst in a regime free of internal and external diffusion limitations. The effects of reaction temperature, hydrogen pressure and reactant concentration on the reaction rate were obtained experimentally between 393 K and 453 K and over a hydrogen pressure range from 1.1 MPa to 3.8 MPa. The result shows that the reaction rate is zero-order in benzene concentration and first-order with respect to hydrogen pressure and the activation energy is 43.88 kJ/mol. The kinetic model was further verified by the experimental data, which were obtained under lower reactant concentration.