Insights on the effect of Si-Al interaction on Ni/Al2O3/SiC monolithic catalysts for CO2 methanation

Xiangli Liu; Fei Gao; Jingyang Huang; Yiqing Zeng; Zhaoxiang Zhong; Weihong Xing

doi:10.1016/j.cjche.2025.05.031

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Insights on the effect of Si-Al interaction on Ni/Al₂O₃/SiC monolithic catalysts for CO₂ methanation

Updated：2026-02-12

- Insights on the effect of Si-Al interaction on Ni/Al₂O₃/SiC monolithic catalysts for CO₂ methanation
- Insights on the effect of Si-Al interaction on Ni/Al₂O₃/SiC monolithic catalysts for CO₂ methanation
- 中国化学工程学报（英文版） 2025年87卷第11期
- Affiliations：
  
  1. School of Environmental Science and Engineering, Nanjing Tech University,Nanjing,China,211816
  2. Department of Statistics and Operations Research, University of North Carolina,NC,Chapel Hill,USA,27599
  3. State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Special Separation Membrane, Nanjing Tech University,Nanjing,China,211816
  4. NJTECH University Suzhou Future Membrane Technology Innovation Center,Suzhou,China,215300
  5. Jiangsu University,Zhenjiang,China,212013
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2025.05.031
  中图分类号：
- 纸质出版：2025
- Accepted：
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Xiangli Liu, Fei Gao, Jingyang Huang, 等. Insights on the effect of Si-Al interaction on Ni/Al₂O₃/SiC monolithic catalysts for CO₂ methanation[J]. 中国化学工程学报（英文版）, 2025,87(11). DOI: 10.1016/j.cjche.2025.05.031.

O
Xiangli Liu, Fei Gao, Jingyang Huang, 等. Insights on the effect of Si-Al interaction on Ni/Al₂O₃/SiC monolithic catalysts for CO₂ methanation[J]. 中国化学工程学报（英文版）, 2025,87(11). DOI: 10.1016/j.cjche.2025.05.031. DOI：

O DOI： 10.1016/j.cjche.2025.05.031.

摘要

Abstract

Monolithic catalysts have been widely investigated for CO

methanation due to their fast mass and heat transfer rate

but the effect of the interaction between the catalyst layer and the monolithic support has been little studied. In this work

Ni/Al

/SiC monolithic catalysts

Ni/Al

powder catalysts and Ni/Al

/SiC-M catalysts were prepared to explore the effect of Si-Al interaction between the catalyst layer and SiC ceramic for CO

methanation performance. Ni/Al

/SiC exhibited a CO

conversion of 53% and a CH

specific reaction rate of 0.05 mmol·g

-1

·s

-1

under conditions of 0.1 MPa

400 °C

and a WHSV of 60000 ml·g

-1

·h

-1

. The CO

conversion raised by 0.15-fold and the CH

specific reaction rate raised by 0.25-fold compared to Ni/Al

with the same catalyst content. SEM

XRD

Raman

and other characterization results revealed that the formation of Si-Al interaction between the catalyst layer and SiC ceramic could weaken the interaction between Ni and Al

thereby improving the catalytic activity of Ni/Al

/SiC catalyst. However

the Si-Al interaction was further strengthened during the high-temperature reaction process

which significantly weakened the interaction between Ni and A

thereby leading to a decline in the catalytic performance of Ni/Al

/SiC catalyst during an 80-h stability test. This study provides valuable insights for future research and development of monolithic catalysts.

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