{
  "abstract": "Monometallic (Ni and Co) and bimetallic (Ni-Co) catalysts supported on lanthanum-zirconia (LaZr) were synthesized with different ratios of 1.25Ni-3.75Co, 2.5Ni-2.5Co, 3.75Ni-1.25Co and 4.25Ni-0.75Co and evaluated for the dry reforming of methane (DRM) process. The total metal loading was adjusted to 5 wt% in all catalysts. The catalysts evaluation was performed at a stoichiometric CH₄/CO₂ feed ratio of 1, in a fixed-bed stainless steel reactor at 750 °C under atmospheric pressure. This work evaluates the effect of Ni/Co ratio on catalytic performance, CO₂ desorption behaviour and carbon accumulation. The catalysts were characterized by techniques: H₂-temperature-programmed reduction (H₂-TPR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM) with energy dispersive X-ray (EDX), transmission electron microscopy (TEM) to monitor the textural, structural, and surface characteristics change with varying the chemical composition and link these characteristics with the catalytic efficiency. The 4.25Ni-0.75Co-LaZr catalyst showed the highest initial activity, achieving CH₄ and CO₂ conversions of 82.07 and 82.74%, respectively, together with the highest H₂ yield of 78.81% under the investigated conditions, with CH₄ conversion reaching 75.16% after 360 min. CO₂-TPD showed composition-dependent desorption behaviour, with more pronounced high-temperature features for Co-rich catalysts. TGA indicated moderately lower carbon deposition for 4.25Ni-0.75Co-LaZr than for 5Ni-LaZr (34.7 versus 41.9 wt%), while Raman spectra indicated differences in the structural disorder of the carbon. These findings highlight the potential of Ni-Co/LaZr catalysts for syngas production and demonstrate the influence of Ni/Co ratio on catalytic performance and carbon accumulation during DRM.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry, College of Science, King Saud University (KSU) P.O. Box 2455 Riyadh 11451 Saudi Arabia.",
    "Nuclear Technologies Institute (NTI), King Abdulaziz City for Science and Technology (KACST) P.O. Box 6086 Riyadh 11442 Saudi Arabia.",
    "Chemical Engineering Department, College of Engineering, King Saud University (KSU) P.O. Box 800 Riyadh 11421 Saudi Arabia aalfatesh@ksu.edu.sa.",
    "Hydrogen Technologies Institute, King Abdulaziz City for Science & Technology (KACST) Riyadh Saudi Arabia."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Waad M Alotaibi"
    },
    {
      "affs": [
        0
      ],
      "name": "Salwa B Alreshaidan"
    },
    {
      "affs": [
        2
      ],
      "name": "Abdulaziz A M Abahussain",
      "orcid": "0000-0002-2009-9146"
    },
    {
      "affs": [
        2
      ],
      "name": "Rehab M Ali",
      "orcid": "0000-0003-0539-382X"
    },
    {
      "affs": [
        2
      ],
      "name": "Ahmed A Ibrahim"
    },
    {
      "affs": [
        3
      ],
      "name": "Ghzzai Almutairi",
      "orcid": "0000-0002-3149-4344"
    },
    {
      "affs": [
        2
      ],
      "name": "Mathkar Alharthi"
    },
    {
      "affs": [
        2
      ],
      "name": "Hamid Ahmed"
    },
    {
      "affs": [
        3
      ],
      "name": "Mohammed Alsaleh"
    },
    {
      "affs": [
        2
      ],
      "name": "Ahmed S Al-Fatesh",
      "orcid": "0000-0002-5521-5741"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bfcws3yfmte53.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra05341f",
  "fulltext_url": "https://europepmc.org/articles/PMC13701106",
  "id": "bfcws3yfmte53",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42936207",
  "language": "eng",
  "licence": "CC-BY-NC",
  "licence_label": "CC BY-NC",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1503|Catalysts for Methane Reforming"
    ]
  ],
  "openalex": "W7223678085",
  "pdf_url": "https://europepmc.org/articles/PMC13701106?pdf=render",
  "pmcid": "PMC13701106",
  "pmid": "42936207",
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bfcws3yfmte53.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:22:12Z",
      "native_id": "MED:42936207",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42936207"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1503|Catalysts for Methane Reforming",
      "subfield": "catalysis"
    }
  ],
  "title": "Enhanced methane dry reforming using Ni-Co bimetallic catalysts supported on lanthanum-zirconia.",
  "title_text": "Enhanced methane dry reforming using Ni-Co bimetallic catalysts supported on lanthanum-zirconia.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:22:12Z",
  "url": "https://research.draconitic.com/paper/bfcws3yfmte53",
  "venue": "RSC advances",
  "versions": []
}