Experiment and modeling of coke formation and catalyst deactivation in <i>n</i>-heptane catalytic cracking over HZSM-5 zeolites

Zhenzhou Ma; Xu Hou; Bochong Chen; Liu Zhao; Enxian Yuan; Tingting Cui

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Experiment and modeling of coke formation and catalyst deactivation in n-heptane catalytic cracking over HZSM-5 zeolites

Full Length Article | Updated：2026-01-06

- Experiment and modeling of coke formation and catalyst deactivation in n-heptane catalytic cracking over HZSM-5 zeolites
- Chinese Journal of Chemical Engineering Vol. 55, Issue 3, Pages: 165-172(2023)
- Affiliations：
  
  1. School of Chemical Engineering, Changchun University of Technology,Changchun,China,130012
  2. Advanced Institute of Materials Science, Changchun University of Technology,Changchun,China,130012
  3. School of Chemistry and Chemical Engineering, Yangzhou University,Yangzhou,China,225009
  4. Department of Chemistry, Tsinghua University,Beijing,China,100084
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2023
- Accepted：
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-heptane catalytic cracking over HZSM-5 zeolites[J]. 中国化学工程学报, 2023, 55(3): 165-172.
DOI：

-heptane catalytic cracking over HZSM-5 zeolites[J]. 中国化学工程学报, 2023, 55(3): 165-172. DOI：

摘要

Abstract

Since paraffins catalytic cracking was of significant importance to light olefins and aromatics production

this work was intended to gain insights into the feature and model of coke formation and catalyst deactivation in

-heptane catalytic cracking over HZSM-5 zeolites. 18 tests of

-heptane catalytic cracking were designed and carried out over HZSM-5 zeolites in a wide range of operating conditions. A particular attention was paid to the measurement of the conversion

product distribution

coke content

and the porosity and acidity of the fresh and spent HZSM-5 zeolites. It was found that alkene and aromatic promoted coke formation

and it reduced the pore volume and acid site of HZSM-5 zeolites

tailoring its performance in

-heptane catalytic cracking. The specific relationship between HZSM-5 zeolites

-heptane conversion

product distribution and coke formation was quantitively characterized by the exponential and linear function. Based on the reaction network

the coupled scheme of coke formation and catalyst deactivation were specified for

-heptane catalytic cracking. The dual-model was proposed for the process simulation of

-heptane catal

ytic cracking over HZSM-5 zeolites. It predicted not only the conversion and product distribution but also coke content with the acceptable errors.

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Experiment and modeling of coke formation and catalyst deactivation in n-heptane catalytic cracking over HZSM-5 zeolites

DOI：

摘要

Abstract

关键词

Keywords

references