Steam reforming of methane over Ni catalysts prepared from hydrotalcite-type precursors: Catalytic activity and reaction kinetics

Yang Qi; Zhenmin Cheng; Zhiming Zhou

doi:10.1016/j.cjche.2013.11.002

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Steam reforming of methane over Ni catalysts prepared from hydrotalcite-type precursors: Catalytic activity and reaction kinetics

催化、动力学与反应工程 | Updated：2026-01-06

- Steam reforming of methane over Ni catalysts prepared from hydrotalcite-type precursors: Catalytic activity and reaction kinetics
- Chinese Journal of Chemical Engineering Vol. 23, Issue 1, Pages: 76-85(2015)
- Affiliations：
  
  State Key Laboratory of Chemical Engineering, East China University of Science and Technology,Shanghai,China,200237
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2013.11.002
  CLC：
- Published：2015
- Accepted：
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Yang Qi, Zhenmin Cheng, Zhiming Zhou. Steam reforming of methane over Ni catalysts prepared from hydrotalcite-type precursors: Catalytic activity and reaction kinetics[J]. Chin.J.Chem.Eng., 2015, 23(1): 76-85.
DOI：

Yang Qi, Zhenmin Cheng, Zhiming Zhou. Steam reforming of methane over Ni catalysts prepared from hydrotalcite-type precursors: Catalytic activity and reaction kinetics[J]. Chin.J.Chem.Eng., 2015, 23(1): 76-85. DOI： 10.1016/j.cjche.2013.11.002.

摘要

Abstract

Ni/Mg-Al catalysts derived fromhydrotalcite-type precursorswere prepared by a co-precipitation technique and applied to steamreforming of methane. By comparison with Ni/γ-Al

and Ni/α-Al

catalysts prepared by incipientwetness impregnation

the Ni/Mg-Al catalyst presented much higher activity as a result of higher specific surface area and better Ni dispersion. The Ni/Mg-Al catalyst with a Ni/Mg/Almolar ratio of 0.5:2.5:1 exhibited the highest activity for steam methane reforming andwas selected for kinetic investigation. With external and internal diffusion limitations eliminated

kinetic experiments were carried out at atmospheric pressure and over a temperature range of 823-973 K. The results demonstrated that the overall conversion of CH

and the conversion of CH

to CO

were strongly influenced by reaction temperature

residence time of reactants aswell asmolar ratio of steam to methane. A classical Langmuir-Hinshelwood kinetic model proposed by Xu and Froment (1989) fitted the experimental data with excellent agreement. The estimated adsorption parameters were consistent thermodynamically.

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