Kinetics Model of the n-Hexane Isomerization Catalyzed by Pt-SO42-/ZrO2-Al2O3

被引：0

作者：

Zhang, Kongyuan ^{[1
]}

Cui, Mengda ^{[1
]}

Huang, Renqiang ^{[1
]}

Ma, Liang ^{[1
]}

Liu, Chenguang ^{[1
]}

机构：

[1] College of Chemical Engineering, China University of Petroleum, Qingdao,266580, China

来源：

Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | 2023年 / 39卷 / 02期

关键词：

Activation energy - Chemical reactors - Hexane - Hydrogen - Kinetic parameters - Kinetic theory - Reaction kinetics;

D O I：

10.3969/j.issn.1001-8719.2023.02.006

中图分类号：

学科分类号：

摘要：

Pt-SO42-/ZrO2-Al2O3 was prepared by coprecipitation method and Pt-SO42-/ZrO2-Al2O3 solid superacid catalyst was prepared by isovolumetric impregnation method. The effects of reaction temperature, reaction pressure, hydrogen to oil volume ratio and volume space velocity on the hydroisomerization of n-hexane by Pt-SO42-/ZrO2-Al2O3 catalyst were evaluated using a 5 mL continuous fixed bed reactor. The pseudo first-order kinetic model was verified and a kinetic model of first-order reaction network for n-hexane isomerization was established. The results show that the conversion rate of n-hexane is decreased with the increase of reaction pressure and volume space velocity, and increased with the increase of hydrogen to oil volume ratio and reaction temperature. The hydroisomerization of nhexane over Pt-SO42-/ZrO2-Al2O3 catalyst at the temperature of 180—200 ℃ can be regarded as a simple pseudo first-order reversible reaction, with the activation energy (Ea) of 81.84 kJ/mol and pre-exponential factor (A) of 1.57×109 h-1. The kinetic model of pseudo first-order reaction network is well fitted with the experimental results, and the activation energy of each step is between 76 and 127 kJ/mol. © 2023 Science Press. All rights reserved.

引用

页码：300 / 309