Citation: Sha Li, Xin Wang, Min Cao, Jingjun Lu, Li Qiu, Xiaoliang Yan. Engineering the Interface and Interaction Structure on Highly Coke-Resistant Ni/CeO₂-Al₂O₃ Catalyst for Dry Reforming of Methane[J]. Chinese Journal of Structural Chemistry, ;2022, 41(12): 221200. doi: 10.14102/j.cnki.0254-5861.2022-0113 shu

Engineering the Interface and Interaction Structure on Highly Coke-Resistant Ni/CeO₂-Al₂O₃ Catalyst for Dry Reforming of Methane

Sha Li ¹ ,
Xin Wang ¹ ,
Min Cao ¹ ,
Jingjun Lu ¹ ,
Li Qiu ¹ ,
Xiaoliang Yan ^{1, 2,,}

1.
College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan 030024, China
2.
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: Xiaoliang Yan, yanxiaoliang@tyut.edu.cn
Received Date: 7 May 2022
Accepted Date: 1 August 2022
Available Online: 6 August 2022

Figures(9)

Designing and tailoring metal-support interaction in Ni-based catalysts with plentiful interfacial sites is of significant interest for achieving a targeted catalytic performance in dry reforming of methane (DRM), but remains as a challenging task. In this work, Ni/Al₂O₃ and Ni/CeO₂-Al₂O₃ catalysts with the same strong metal-support interaction (SMSI) but distinct interface structure are developed by an improved evaporation-induced self-assembly method using pseudobohemite gel as aluminum source. Ni/CeO₂-Al₂O₃ exhibits superior catalytic activity and stability in DRM in comparison with Ni/Al₂O₃. The highest CH₄ and CO₂ conversion reaches at 71.4% and 82.1% for Ni/CeO₂-Al₂O₃, which are higher than that of 64.3% and 75.6% for Ni/Al₂O₃ at 700 ℃. The SMSI effect in Ni/CeO₂-Al₂O₃ provides more active interfacial sites with less coke deposition, and promotes the generation of active formate species which are the key intermediates for DRM. The findings of the present work could possibly pave the way for fabricating catalysts with SMSI strategy for efficient heterogeneous catalysis.
- metal-support interaction,
- interface,
- Ni catalysts,
- CeO₂,
- dry reforming of methane
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Engineering the Interface and Interaction Structure on Highly Coke-Resistant Ni/CeO2-Al2O3 Catalyst for Dry Reforming of Methane

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通讯作者: 陈斌, bchen63@163.com

Engineering the Interface and Interaction Structure on Highly Coke-Resistant Ni/CeO₂-Al₂O₃ Catalyst for Dry Reforming of Methane