期刊
ACS CATALYSIS
卷 12, 期 24, 页码 15501-15528出版社
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.2c04619
关键词
hydrogen production; molybdenum carbide catalysts; surface properties; mechanism; methane reforming
资金
- National Key R&D Program of China [2021YFA1501102, 2017YFA0700103]
- National Natural Science Foundation of China [21872014, 21932002, 22202028, 22276023]
- Fundamental Research Funds for the Central Universities [DUT22ZD212, DUT22LAB602]
- Liaoning Revitalization Talent Program [XLYC2008032]
- Talent Introduction Program of Postdoctoral International Exchange Program [YJ20210238]
This review highlights the applications and challenges of transition-metal carbides in methane reforming reactions (MRRs) and discusses strategies to improve their performance. The findings provide guidance for the future design of efficient catalysts for hydrogen production.
Hydrogen, with its high energy content and environmental-friendly properties, is considered an effective energy carrier in addition to fossil fuels. Methane reforming represents a major method of hydrogen production, although the applied catalysts often suffer from coke deposition and metal sintering at high operating temperatures. Transition-metal carbides (TMCs), particularly molybdenum carbides (MoxC), possess features such as Pt-like behaviors, affinity with oxidants such as CO2 and H2O, and a strong metal-support interaction for metal dispersion and stabilization, rendering them great prospective candidates for catalyzing the methane reforming reactions (MRRs). This review focuses on the recent applications and challenges of TMCs in MRRs, with an emphasis on the strategies to improve their performance by (1) engineering the operational conditions, (2) designing a dual M- MoxC (M = Ni or Co etc.) active site, (3) dispersing M-MoxC on supports, and (4) generating a M-MoxC/MoOxCy interface in situ. The present review will provide guidance for the future design of efficient catalysts for H2 production from MRRs.
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