{
  "abstract": "Flame synthesis is a promising route for producing mixed-oxide catalysts, but the role of precursor concentration in regulating catalyst formation during self-sustained flame pyrolysis remains insufficiently understood. In this work, CuO-CeO2 mixed-oxide catalysts were prepared by varying the total metallic precursor concentration from 0.04 to 0.28 mol·L−1 while keeping the Cu/(Cu + Ce) molar ratio fixed at 35 mol.%. This strategy enables the influence of precursor concentration to be distinguished from that of metal composition and provides insight into the formation of CuO-CeO2 catalysts under a self-sustained flame environment. The results show that precursor concentration strongly affects particle aggregation, crystallite growth, Cu species distribution and possible lattice incorporation, oxygen species distribution, and low-temperature reducibility. Among the prepared catalysts, CuCe0.20 exhibits the most favorable balance among textural characteristics, Cu-Ce interaction, oxygen species distribution and redox behavior, and surface reactive oxygen availability. As a result, CuCe0.20 achieves 90% C3H6 conversion at 380 °C and nearly complete conversion at 450 °C. More importantly, it maintains stable activity during a 600 min test at 450 °C with an apparent CO2 selectivity of 99.9%. Post-reaction characterization further reveals that the CeO2 framework and Cu-Ce interaction are largely retained, while the relative contribution of lattice oxygen increases after long-term reaction, accompanied by retained low-temperature reducibility. This work extends the design of flame-made CuO-CeO2 catalysts from composition optimization to precursor-concentration engineering and demonstrates a practical strategy for preparing stable non-noble metal catalysts for VOC catalytic combustion.",
  "abstract_shown": true,
  "affiliations": [
    "Key Laboratory of Energy Thermal Conversion and Control, Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Shuo Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Tianze Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuxiao Lu"
    },
    {
      "affs": [
        0
      ],
      "name": "Shiya Meng"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhenkun Sun"
    },
    {
      "affs": [
        0
      ],
      "name": "Yuanqiang Duan"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ehr8qsh6hsq3k.bib",
  "cited_by": 0,
  "doi": "10.3390/molecules31203653",
  "fulltext_url": null,
  "id": "ehr8qsh6hsq3k",
  "issns": [
    "1420-3049"
  ],
  "landing_url": "https://www.mdpi.com/1420-3049/31/20/3653",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2505|Catalytic Processes in Materials Science"
    ]
  ],
  "openalex": "W7221594263",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/ehr8qsh6hsq3k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:42Z",
      "native_id": "10.3390/molecules31203653",
      "source": "crossref",
      "url": "https://www.mdpi.com/1420-3049/31/20/3653"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Catalytic Processes in Materials Science",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Precursor-Concentration-Regulated CuO-CeO2 Catalysts with Tailored Oxygen Species and Redox Behavior for Efficient C3H6 Catalytic Combustion",
  "title_text": "Precursor-Concentration-Regulated CuO-CeO2 Catalysts with Tailored Oxygen Species and Redox Behavior for Efficient C3H6 Catalytic Combustion",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:42Z",
  "url": "https://research.draconitic.com/paper/ehr8qsh6hsq3k",
  "venue": "Molecules",
  "versions": []
}