{
  "abstract": "The selective catalytic reduction of NOx with ammonia (NH3-SCR) is a key technology for abating NOx emissions. Single-metal-loaded zeolite catalysts typically exhibit inferior low-temperature activity and a narrow effective temperature window, and the unclear synergistic mechanisms among multiple metal components further hinder their practical application. Herein, we synthesized a series of MnFeCe/SSZ-13 catalysts with varying Mn/Fe mass ratios using a wet chemical ion-exchange method to enhance low-temperature activity and expand the active temperature range. The optimal Mn(6 wt%)Fe(2 wt%)Ce-13 catalyst achieved >90% NO conversion over a temperature range of 185–475 °C, representing a 160 °C shift toward lower temperatures compared with the Fe(8 wt%)Ce-13. Systematic characterization revealed that a suitable Mn/Fe ratio facilitated the formation of abundant surface Mn4+/Fe2+ species and a high content of surface-adsorbed oxygen. In this synergistic system, Mn4+ promotes NO oxidation to NO2, contributing to the fast SCR pathway; Fe2+ inhibits NH3 over-oxidation at high temperatures; and Ce4+ may acts as an oxygen buffer to stabilize the catalytic cycle. In situ DRIFTS further provided evidence for the coexistence of Langmuir–Hinshelwood (L–H) and Eley–Rideal (E–R) mechanisms along with fast selective catalytic reduction (fast SCR) reaction. This work unravels the Mn–Fe synergistic mechanism that addresses the issues of insufficient low-temperature activity and restricted temperature range, offering experimental validation and mechanistic guidance for developing high-performance NH3-SCR catalysts with extended temperature applicability.",
  "abstract_shown": true,
  "affiliations": [
    "Faculty of Materials Science and Engineering, Kunming University of Science and Technology Kunming 650093 PR China",
    "Kunming Sino-Platinum Metals Catalyst Co., Ltd. Kunming 650106 PR China",
    "Digital Industry Research Institute, Zhejiang Wanli University Ningbo 315100 PR China",
    "Research Center for Analysis and Measurement, Kunming University of Science and Technology Kunming 650093 PR China"
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "ChenXiao Xu"
    },
    {
      "affs": [
        1
      ],
      "name": "Yin Liang"
    },
    {
      "affs": [
        2
      ],
      "name": "Hongyuan Song",
      "orcid": "0000-0003-0844-3036"
    },
    {
      "affs": [
        0
      ],
      "name": "Chen Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Haorong Wu",
      "orcid": "0009-0003-8532-4898"
    },
    {
      "affs": [
        0
      ],
      "name": "Daiwei Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Jianlin Dong"
    },
    {
      "affs": [
        3
      ],
      "name": "Kun Dong"
    },
    {
      "affs": [
        0
      ],
      "name": "Lan Yu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/87nfat6vw16mt.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra07769b",
  "fulltext_url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC13648324/",
  "id": "87nfat6vw16mt",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://doi.org/10.1039/d6ra07769b",
  "language": "en",
  "licence": "CC-BY-NC-3.0",
  "licence_label": "CC BY-NC 3.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/3.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Chemistry"
    ],
    [
      "openalex",
      "2505|Catalytic Processes in Materials Science"
    ]
  ],
  "openalex": "W7220924369",
  "pdf_url": null,
  "pmcid": "PMC13648324",
  "pmid": "42852127",
  "published": "2026-10-08",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/87nfat6vw16mt.ris",
  "sources": [
    {
      "first_seen": "2026-11-01T12:23:33Z",
      "native_id": "PMC13648324",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra07769b"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Catalytic Processes in Materials Science",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Mn/Fe synergy enables wide-temperature NH3-SCR activity over MnFeCe/SSZ-13: insights into the structure–activity relationship",
  "title_text": "Mn/Fe synergy enables wide-temperature NH3-SCR activity over MnFeCe/SSZ-13: insights into the structure–activity relationship",
  "type": "peer-reviewed",
  "updated_at": "2026-11-02T12:20:47Z",
  "url": "https://research.draconitic.com/paper/87nfat6vw16mt",
  "venue": "RSC Advances",
  "versions": []
}