Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter

The development of advanced catalysts is critical to realize efficient ammonia (NH3) synthesis under mild conditions. However, the activation of an inert N≡N bond in N2 molecules is the primary hindrance to NH3 synthesis, and hydrogen poisoning is another major and a serious problem, especially in Ru-based catalysts. Here, we develop an H-ZSM-5-supported Ru-based catalyst (Ce–Ru/HZ) via decorating with a CeO2 promoter to realize efficient NH3 synthesis. Our study shows that the Ce species can serve as an electron donor to enrich the electron density of Ru sites, thus accelerating N2 activation for NH3 synthesis. Meanwhile, the interaction of Ru and Ce can alleviate the effect of hydrogen poisoning on Ru sites. Consequently, the 16 wt % Ce-promoted Ru/HZ catalyst displays a superior NH3 synthesis rate and long-term stability of more than 550 h at 400 °C and 1 MPa.

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Publication Details

Journal
Industrial & Engineering Chemistry Research
Published
2025-04-23
DOI
https://doi.org/10.1021/acs.iecr.4c04868
Citations
1
Primary Topic
Ammonia Synthesis and Nitrogen Reduction
Type
article
Field-Weighted Citation Impact
0.39

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article

Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter

Jun Ni, Jie Zhu, Xiuyun Wang, Kexin Yue et al.
1 citations
Industrial & Engineering Chemistry Research
Ammonia Synthesis and Nitrogen Reduction
0.39
article

Enhanced Ammonia Synthesis Performance over Ru-Based Catalysts via the Addition of Ce Promoter

Jun Ni, Jie Zhu, Xiuyun Wang, Kexin Yue, Richeng Mao, Yanliang Zhou, Jiangyang Mo, Tianhua Zhang, Mingyuan Zhang, Jianxin Lin, Lilong Jiang, Ruting Lin, Shiyong Zhang
article en
1 citations

Abstract

The development of advanced catalysts is critical to realize efficient ammonia (NH3) synthesis under mild conditions. However, the activation of an inert N≡N bond in N2 molecules is the primary hindrance to NH3 synthesis, and hydrogen poisoning is another major and a serious problem, especially in Ru-based catalysts. Here, we develop an H-ZSM-5-supported Ru-based catalyst (Ce–Ru/HZ) via decorating with a CeO2 promoter to realize efficient NH3 synthesis. Our study shows that the Ce species can serve as an electron donor to enrich the electron density of Ru sites, thus accelerating N2 activation for NH3 synthesis. Meanwhile, the interaction of Ru and Ce can alleviate the effect of hydrogen poisoning on Ru sites. Consequently, the 16 wt % Ce-promoted Ru/HZ catalyst displays a superior NH3 synthesis rate and long-term stability of more than 550 h at 400 °C and 1 MPa.

Industrial & Engineering Chemistry ResearchVol. 64(18)
Institute of Biophysics (BG), Dezhou University (CN), Fuzhou University (CN)
National Natural Science Foundation of China, Dezhou University, Natural Science Foundation of Shandong Province, National Key Research and Development Program of China
Openalex Percentile: Top 45%
Ammonia Synthesis and Nitrogen Reduction
0.39
DOISourceOpenAlex
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