Vicario Baroroh, Didik Prasetyoko, Stella Jovita, Jasmin Nur Anggia, Brigyta Savariell Kurniawan, Anggoro Dias Ainur Rasyid, Hasliza Bahruji, Khawiyatur Rivah, Ingelia Yuan Fernanda, Trias Alzatory Ersyada, Anjas Abimanyu, Nurul Asikin Mijan, Suprapto Suprapto
Asphalt Pyrolysis Oil (APO) obtained from Buton rock asphalt pyrolysis contains high oxygenate compounds, which cause the oil to be acidic and unstable; thus, it requires upgrading to improve its quality. Oxygenate compounds can be reduced by catalytic deoxygenation. This study utilized Buton rock asphalt solid residue (CRA), which is rich in CaCO₃, impregnated with Fe, Ni, and Zn metals as a deoxygenation catalyst (Fe/CRA, Ni/CRA, and Zn/CRA). GC-MS analysis revealed that the initial APO was predominantly composed of oxygenates and heavy fractions (C₁₈ and above) (45.91%). After deoxygenation using Ni/CRA, the C₁₁-C₁₈ fraction increased to 77.40% and the fraction greater than C₁₈ decreased to 16.32%. The Ni/CRA catalyst also showed the best performance with the highest liquid yield (69.11%) and the lowest coke (1.42%). These results indicate that Fe/CRA, Ni/CRA, and Zn/CRA have the potential to improve the quality of APO liquid fuel. © 2026, Walailak University. All rights reserved.
Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia; Departement of Civil Engineering, Faculty of Engineering, Universitas Negeri Surabaya, Surabaya, 60232, Indonesia; Centre for Advanced Material and Energy Sciences, Universiti Brunei Darussalam, Gadong, BE1410, Brunei Darussalam; Departement of Chemistry, Faculty of Science and Technology, University Kebangsaan Malaysia, Bangi, 43600, Malaysia
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