Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst

Lan Rumeng; Sun Chao; Yang Jin; Xue Kang; Guo Xiaolei; Huang Zhenfeng; Gao Ruijie; Zhang Xiangwen; Zou Jijun; Pan Lun

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Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst

Updated：2026-08-24

- Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst
- Chinese Journal of Chemical Engineering Vol. 94, Issue 6, Pages: 196-207(2026)
- Affiliations：
  
  Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Institute of Molecular Plus, National Industry-Education Platform for Energy Storage, Tianjin University, Tianjin 300072, China
  Hydrogen Electricity Interconversion Key Laboratory of Sichuan Province, Dongfang Electric (Chengdu) Hydrogen Technology Co., Ltd., Chengdu 611731, China
  TJU Binhai Industrial Research Institute Co., Ltd., Tianjin 300452, China
  Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
  Zhejiang Institute of Tianjin University, Ningbo 315201, China
- Author bio：
  
  Corresponding authors. E-mail addresses: xuekang@tju.edu.cn(K. Xue)
  panlun76@tju.edu.cn(L. Pan)
- Funds：
- DOI：
  CLC：
- Received：11 August 2025，
  
  Revised：2025-12-25，
  
  Accepted：26 December 2025，
  
  Online First：05 February 2026，
  
  Published：2026-06
- Accepted：
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Lan Rumeng, Sun Chao, Yang Jin, et al. Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 196-207.
DOI：

Lan Rumeng, Sun Chao, Yang Jin, et al. Mechanism and kinetics study on fixed-bed dehydrogenation of liquid organic hydrogen carriers over Pt-based catalyst[J]. Chinese Journal of Chemical Engineering, 2026, 94(6): 196-207. DOI：

摘要

Abstract

Liquid organic hydrogen carriers (LOHCs) enable long-distance hydrogen transport

and the continuous-flow dehydrogenation kinetic is crucial for the rational design of dehydrogenation sys

tem. This work investigates the dehydrogenation reaction pathway

apparent kinetic modeling and impact of products on fixed-bed dehydrogenation of LOHCs over Pt/Al

using perhydro-benzyltoluene (H12-BT) as a model. Experiment results indicate that the initial dehydrogenation of H12-BT predominantly occurs on the mono-substituted side ring (82%)

yielding the dehydrogenated intermediate (H6-BT (SR)). The developed kinetic model reveals a zero-order dependence on H12-BT partial pressure

whereas first-order dependence on H6-BT partial pressure. The activation energy of the first step is slightly higher than that of the second step. Critically

predicted concentration trajectories for all species closely track experimental data points throughout the reaction progress

with a mean relative error of 9.02%. This work elucidates reaction mechanisms and provides essential kinetics for the LOHCs system scale-up.

关键词

Keywords

references

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