石油化工

石油化工 ›› 2011, Vol. 40 ›› Issue (1): 49-54.

• 研究与开发 • 上一篇    下一篇

Cu/ZnO/Al2O3催化剂上仲丁醇脱氢反应动力学研究

房德仁,姜雪梅,王知园,邱昭鹏,张慧敏   

  1. 烟台大学应用催化研究所，山东烟台264005
  • 收稿日期:2010-08-18 修回日期:2013-05-24 出版日期:2011-01-01 发布日期:2013-05-24
  • 作者简介:房德仁(1960—)，男，山东省青州市人，博士，教授，电话 0535-6902233，电邮 fdr@ytu.edu.cn。

Kinetics of Dehydrogenation of 2-Butanol on Cu/ZnO/Al2O3 Catalyst

Fang Deren,Jiang Xuemei,Wang Zhiyuan,Qiu Zhaopeng,Zhang Huimin   

  1. Institute of Applied Catalysis of Yantai University, Yantai Shangdong 264005, China
  • Received:2010-08-18 Revised:2013-05-24 Online:2011-01-01 Published:2013-05-24

摘要： 采用管式连续流动固定床反应器,对仲丁醇在Cu/ZnO/Al2O3催化剂上的脱氢反应本征动力学进行了研究,通过双曲线动力学模型和幂函数动力学模型两种模型计算了该反应的各项参数以及反应的表观活化能，将实验数据用SPSS统计分析软件对动力学模型进行非线性最小二乘法参数拟合, 确定了反应机理并求出了表观活化能。实验结果表明，采用双曲线动力学模型时，仲丁醇在催化剂表面的脱氢反应为速率控制步骤，表观活化能为64.75 kJ/mol|采用幂函数动力学模型时表观活化能为81.89 kJ/mol。用相关指数R2和F分布对两个速率方程进行了检验，两个速率方程的R2均接近于1，F＞10Fα，且用双曲线动力学模型时结果的相关度较高。

关键词: 仲丁醇, 脱氢, 甲乙酮, 动力学, 铜/氧化锌/氧化铝催化剂

Abstract: Reaction kinetics for 2-butanol dehydrogenation on Cu/ZnO/Al2O3 catalyst was studied in a continuous flow fixed-bed reactor. The kinetics parameter fitting was carried out with the nonlinear least square method by means of SPSS statistical analysis software. The reaction mechanism was described by means of Langmuir-Hinshelwood mechanism and empirical model. The model parameters and the apparent activation energy of the dehydrogenation reaction were calculated. The results showed that 2-butanol dehydrogenation on the catalyst surface was the rate controlling step in the case of Langmuir-Hinshelwood mechanism as the reaction kinetics model and the apparent activation energy was 64.75 kJ/mol. But the apparent activation energy was 81.89 kJ/mol in the case of the empirical model. The errors of both the reaction rate equations were tested using correlation index(R2) and F-check, and the results showed that the correlation index R2 was close to 1 and F＞10Fα in both the cases. In addition, the error of the reaction rate equation based on Langmuir-Hinshelwood mechanism was less.

Key words: 2-butanol, dehydrogenation, methylethyl ketone, kinetics, copper/zinc oxide/alumina catalyst

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