RT Journal Article T1 Production of hydrogen and valuable fuels from polyethylene terephthalate waste dissolved in phenol reforming and cracking reactions via Ni-Co/CeO2 nano-catalyst A1 Nabgan, Walid A1 Nabgan, Bahador A1 Abdullah, Tuan Amran Tuan A1 Jalil, Aishah Abdul A1 Ul-Hamid, Anwar A1 Ikram, Muhammad A1 Nordin, Abu Hassan A1 Coelho Cotón, Alberto José K1 Synthesis K1 Ni-Co/CeO2nanosized K1 Plastic waste K1 Phenol K1 Fuel AB This research investigates the preparation of Ni-Co/CeO2 catalysts based on impregnation and hydrothermal treatment methods for the hydrogen and valuable fuels generation from the steam reforming and cracking reactions of polyethylene terephthalate (PET) waste liquefied in phenol. PET plastic waste is environmentally harmful, mostly when it eliminated by burning or landfilling. Therefore, in this study, this waste has been dissolved in phenol for hydrogen and liquid fuel generation via catalytic steam reforming and cracking reactions. Complementary characterization techniques such as XRD, BET, FTIR, SEM, TEM, EDX, H2-TPR, CO2-TPD, NH3-TPD, ICP, CHNS and TGA were used to correlate surface structure and functionality to catalytic performance of the catalysts. The hydrothermal route leads to higher catalyst activity and stability against a by-product formation such as coke, which approved by time on stream process, TGA and CHNS analysis. For an instant, at 700 °C of the catalytic reaction, impregnation method cause to achieve 72.8 % of phenol conversion and 56 % of hydrogen yield, while these factors increased when conducting the hydrothermal treatment to 83.8 % and 76 %, respectively. Analysis of liquid products obtained from GCMS illustrated that valuable components such as dibenzofuran, 2-methyl phenol and benzene were produced from PET cracking and phenol steam reforming reactions. This phenomenon is a vital idea to solve plastic waste recycling issues. PB Elsevier SN 0165-2370 YR 2021 FD 2021-03 LK https://hdl.handle.net/10347/46307 UL https://hdl.handle.net/10347/46307 LA eng NO Nabgan, W., Nabgan, B., Abdullah, T. A. T., Jalil, A. A., Ul-Hamid, A., Ikram, M., Nordin, A. H., & Coelho, A. (2021). Production of hydrogen and valuable fuels from polyethylene terephthalate waste dissolved in phenol reforming and cracking reactions via Ni-Co/CeO₂ nano-catalyst. Journal of Analytical and Applied Pyrolysis, 154, 105018. https://doi.org/10.1016/j.jaap.2021.105018 NO This is an Accepted Manuscript of an article published by Elsevier in Journal of Analytical and Applied Pyrolysis on 2021, available at: https://doi.org/10.1016/j.jaap.2021.105018 NO The primary author, Walid Nabgan, is thankful for the support from Universiti Teknologi Malaysia in the form of the Post-Doctoral Fellowship Scheme “Development of a New Catalyst from a Waste to Produce Biodiesel” (PDRU Grant number: 04E81). The authors acknowledge the financial support given for this work by Universiti Teknologi Malaysia (UTM) under the Collaborative Research Grant (CRG) number 07G61, 07G59 and 07G62. DS Minerva RD 20 may 2026