{
  "abstract": "Post-consumer polypropylene (PP) waste is a growing environmental liability in developing economies with limited recycling infrastructure. This study presents an integrated kinetic-to-reactor approach for the catalytic pyrolysis of three compositionally distinct post-consumer PP streams, combining a moderate vacuum (0.45 bar absolute) with a regenerated fluid catalytic cracking (FCC) catalyst to produce diesel-range fuel while valorising two industrial waste streams. The activation energies derived from thermogravimetric analysis (β = 30 °C min−1, N2) using the Coats–Redfern method were 178.3 kJ mol−1 for the near-pure isotactic PP feedstock, consistent with random chain scission, and 209.2 and 351.9 kJ mol−1 for the UV-stabilised and PP/HDPE streams, respectively, reflecting the feedstock composition; the DTG profile informed the selection of 450 °C as the reactor set point. At the best condition within the studied domain (Cat/PP = 0.03 g g−1, 2 h, 450 °C), the regenerated FCC catalyst achieved 75.10 wt% liquid yield, a 50% improvement over thermal pyrolysis, with a low aromatic content of 1.69 area%,attributed primarily to the moderate acidity of the regenerated catalyst, versus the 10–25 wt% typical of atmospheric zeolitic pyrolysis. Vacuum distillation yielded a diesel fraction that mainly complies with the ASTM D975 Grade 2-D S15 parameters (cetane index 68.92, sulphur 14.1 ppm) without hydrotreatment, demonstrating a technically viable waste-to-fuel pathway where post-consumer polyolefins and refinery FCC by-products are simultaneously abundant.",
  "abstract_shown": true,
  "affiliations": [
    "Universitat Rovira i Virgili, Departamento de Ingeniería Mecánica, Av. Paisos Catalans, 26, 43007 Tarragona, Spain",
    "Departamento de Ciencias de la Energía y Mecánica, Universidad de las Fuerzas Armadas ESPE, Av. General Rumiñahui s/n y Ambato, Sangolquí 171103, Ecuador",
    "Centro de Nanociencia y Nanotecnología, Universidad de las Fuerzas Armadas ESPE, Sangolquí 171103, Ecuador",
    "Departamento de Ingeniería Química, Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional EPN, Quito 170143, Ecuador",
    "Departamento de Metalurgia Extractiva, Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional EPN, Quito 170143, Ecuador"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Caterine Donoso",
      "orcid": "0000-0001-9756-8943"
    },
    {
      "affs": [
        1
      ],
      "name": "Gabriela Taipe-Andagua"
    },
    {
      "affs": [
        3
      ],
      "name": "Liliana Guzmán-Beckmann"
    },
    {
      "affs": [
        0
      ],
      "name": "Alberto Coronas",
      "orcid": "0000-0002-6109-3680"
    },
    {
      "affs": [
        2
      ],
      "name": "Alexis Debut",
      "orcid": "0000-0002-8269-7619"
    },
    {
      "affs": [
        3
      ],
      "name": "Sebastian Taco-Vasquez",
      "orcid": "0000-0002-0988-598X"
    },
    {
      "affs": [
        4
      ],
      "name": "Lucia E. Manangon-Perugachi",
      "orcid": "0000-0002-3756-7102"
    },
    {
      "affs": [
        3
      ],
      "name": "Andrés Chico-Proaño",
      "orcid": "0000-0002-6197-6037"
    },
    {
      "affs": [
        0
      ],
      "name": "Joan Carles Bruno",
      "orcid": "0000-0001-7448-5416"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5bb7wsyhr6215.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212760",
  "fulltext_url": null,
  "id": "5bb7wsyhr6215",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2760",
  "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": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-06",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/5bb7wsyhr6215.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T12:21:03Z",
      "native_id": "10.3390/polym18212760",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2760"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Catalytic Pyrolysis of Post-Consumer Polypropylene over a Regenerated FCC Catalyst Under Moderate Vacuum: Gasoline- and Diesel-Range Fuels with a Low Aromatic Content",
  "title_text": "Catalytic Pyrolysis of Post-Consumer Polypropylene over a Regenerated FCC Catalyst Under Moderate Vacuum: Gasoline- and Diesel-Range Fuels with a Low Aromatic Content",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T00:22:01Z",
  "url": "https://research.draconitic.com/paper/5bb7wsyhr6215",
  "venue": "Polymers",
  "versions": []
}