Effect of Intraparticle Diffusion on Catalyst Deactivation Kinetics for Second Order Reactions

王庆祺; 张国泰; 吴指南

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Effect of Intraparticle Diffusion on Catalyst Deactivation Kinetics for Second Order Reactions

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- Effect of Intraparticle Diffusion on Catalyst Deactivation Kinetics for Second Order Reactions
- CIESC Journal Issue 1, (1992)
- 作者机构：
  
  联合化学反应工程研究所设计部,华东化工学院,华东化工学院上海200040,上海200237,上海,200237
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 February 1992，
  
  Published：25 February 1992
- 稿件说明：
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王庆祺, 张国泰, 吴指南. Effect of Intraparticle Diffusion on Catalyst Deactivation Kinetics for Second Order Reactions[J]. CIESC Journal, 1992, (1).
DOI：

王庆祺, 张国泰, 吴指南. Effect of Intraparticle Diffusion on Catalyst Deactivation Kinetics for Second Order Reactions[J]. CIESC Journal, 1992, (1). DOI：

摘要

采用正交配置等数学方法

研究在均匀独立失活的催化反应系统中

内扩散效应对等温球形催化剂失活速率的影响

建立适用于任何内扩散区域的二级反应、m级失活系统的失活有效因子和失活西勒模数的定量关系

对n级反应、m级失活系统也作了相应地推广.运用加压微反-色谱-数据处理机联合装置

通过分析在原颗粒丝光沸石催化剂上进行的临氢甲苯歧化反应的失活数据

研究了内扩散对二级反应失活动力学的影响规律.同时

在实验范围内

建立了一套内扩散存在下的甲苯歧化失活动力学模型.

Abstract

The effect of intraparticle diffusion on the deactivation rates of isothermal

spherical catalyst pellets for uniform independent deactivation was studied by means of the method of orthogonal collocation. A quantitative relationship between the deactivation effectiveness factor and Thiele modulus was developed for the second order reaction and the mth order deactivation. The extension to the nth order reaction and the mth order deactivation was also discussed. A combined unit of micro-reactor and gas chromatography was used to study the deactivation of catalyst for the disproportionation of toluene over mordenite catalyst. Various diffusion-deactivation kinetic equations were tested and their goodness of fit was discussed. In particular

it was found that the second order reaction and the mth order deactivation rate form agreed with the data.

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