H2 Production from Methane Reforming over Molybdenum Carbide Catalysts: From Surface Properties and Reaction Mechanism to Catalyst Development

IF 13.6 1区化学 Q1 CHEMISTRY, PHYSICAL

ACS Catalysis Pub Date : 2022-12-02 DOI:10.1021/acscatal.2c04619

Haiyan Wang, Yanan Diao, Zirui Gao, Kevin J. Smith, Xinwen Guo*, Ding Ma* and Chuan Shi*,

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引用次数: 6

Abstract

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 (Mo_xC), 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–Mo_xC (M = Ni or Co etc.) active site, (3) dispersing M–Mo_xC on supports, and (4) generating a M–Mo_xC/MoO_xC_y 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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碳化钼催化剂上甲烷重整制氢:从表面性质、反应机理到催化剂开发

氢具有高能量含量和环保特性，被认为是化石燃料之外的有效能源载体。甲烷重整是一种主要的制氢方法，尽管所应用的催化剂在高温下经常受到焦炭沉积和金属烧结的影响。过渡金属碳化物(tmc)，特别是碳化钼(MoxC)，具有pt样行为、与氧化剂(CO2和H2O)的亲和性以及金属-载体间的强相互作用对金属的分散和稳定等特点，是催化甲烷重整反应(MRRs)的重要候选材料。本文综述了tmc在mrr中的最新应用和面临的挑战，重点介绍了通过(1)工程操作条件，(2)设计双M - moxc (M = Ni或Co等)活性位点，(3)将M - moxc分散在支架上，(4)原位生成M - moxc /MoOxCy界面来提高其性能的策略。本文的研究成果将为今后设计高效的mrr制氢催化剂提供指导。

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来源期刊

ACS Catalysis CHEMISTRY, PHYSICAL-

CiteScore

20.80

自引率

6.20%

发文量

1253

审稿时长

1.5 months

期刊介绍： ACS Catalysis is an esteemed journal that publishes original research in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. It offers broad coverage across diverse areas such as life sciences, organometallics and synthesis, photochemistry and electrochemistry, drug discovery and synthesis, materials science, environmental protection, polymer discovery and synthesis, and energy and fuels. The scope of the journal is to showcase innovative work in various aspects of catalysis. This includes new reactions and novel synthetic approaches utilizing known catalysts, the discovery or modification of new catalysts, elucidation of catalytic mechanisms through cutting-edge investigations, practical enhancements of existing processes, as well as conceptual advances in the field. Contributions to ACS Catalysis can encompass both experimental and theoretical research focused on catalytic molecules, macromolecules, and materials that exhibit catalytic turnover.