Kinetics of S-1 catalyzed vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam

JIN Xing; MENG Fanhui; WANG Shuhai; WANG Yaquan

doi:10.3969/j.issn.0438-1157.2013.03.019

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Kinetics of S-1 catalyzed vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam

更新时间：2025-12-10

- Kinetics of S-1 catalyzed vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam
- CIESC Journal Issue 3, Pages: 924-930(2013)
- 作者机构：
  
  天津大学化工学院,绿色合成与转化教育部重点实验室,天津,300072
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.03.019
  CLC： Q013.2
- Online First：05 March 2013，
  
  Published：05 March 2013
- 稿件说明：
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JIN Xing, MENG Fanhui, WANG Shuhai, et al. Kinetics of S-1 catalyzed vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam[J]. CIESC Journal, 2013, (3): 924-930.
DOI：

JIN Xing, MENG Fanhui, WANG Shuhai, et al. Kinetics of S-1 catalyzed vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam[J]. CIESC Journal, 2013, (3): 924-930. DOI： 10.3969/j.issn.0438-1157.2013.03.019.

摘要

目前尼龙6生产中主要采用发烟硫酸催化环己酮肟液相Beckmann重排制己内酰胺

副产大量硫酸铵

而且存在设备腐蚀等问题。采用气相重排法可以克服上述缺点。本工作在以前得到的优化反应条件下

根据实验并采用催化剂失活的Wojciechowski模型获得了S-1催化环己酮肟气相Beckmann重排制己内酰胺反应动力学方程及参数。该模型将催化剂的活性与在线反应时间相关联

进而可以计算任何在线反应时间时催化剂的失活速率

或者根据要求的转化率最低允许值计算催化剂能在线反应的时间。

Abstract

Caprolactam

the intermediate for the production of Nylon-6

is mainly produced through sulfuric acid catalyzed liquid phase Beckmann rearrangement of cyclohexanone oxime.This process has several disadvantages

such as the corrosion of reactors and by-production of a large amount of ammonium sulfate.These shortcomings can be prevented by vapor phase Beckmann rearrangement.In this work

the kinetics of vapor phase Beckmann rearrangement of cyclohexanone oxime to caprolactam was studied by both experiments and modeling.The results showed that the changes of catalyst activity with online reaction time could be correlated with the catalyst deactivation model developed by Wojciechowski

from which the kinetic equation and the corresponding parameters of the reaction were obtained.The results could be used to calculate deactivation rates at any online reaction time or catalyst life at the permissible lower conversion.

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