Hydrogen and value-added liquid fuel generation from pyrolysis-catalytic steam reforming conditions of microplastics waste dissolved in phenol over bifunctional Ni-Pt supported on Ti-Al nanocatalysts

• Published in: Catalysis today Vol. 400-401; pp. 35 - 48
• Main Authors: Nabgan, Walid, Nabgan, Bahador, Tuan Abdullah, Tuan Amran, Ikram, Muhammad, Jadhav, Arvind H., Ali, Mohamad Wijayanuddin, Jalil, Aishah Abdul
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2022
• Subjects: Hydrogen; Microplastics; Nano-catalysts; Phenol; Pyrolysis-catalytic; Phenol; Microplastics; Hydrogen; Pyrolysis-catalytic; Nano-catalysts
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2021.11.026

This research looks at the potential of utilizing microplastics waste (MPW) found in oceans and soil as a source of liquid fuel. A significant portion of this pollutant is presently untreated and ends up in landfills, exacerbating the worldwide issue of marine and land pollution. Pyrolysis is a tertiary recycling process that is presented as a solution in the presence of a catalyst. This study aimed to develop bifunctional Ni-Pt nanocatalysts supported on TiO2 and Al2O3 for hydrogen and valued fuels generation from pyrolysis-catalytic steam reforming conditions of microplastics waste dissolved in phenol. The chemical and physical properties of nanocatalysts were characterized by BET, XRD, TEM, FESEM, FTIR, H2-TPR, CO2-TPD, NH3-TPD, TGA, ICP and CHNS. It was found that the introduction of a small portion of Pt (2 wt%) metal to the Ni/Ti-Al nanocatalyst was found to significantly enhance the reducibility, acidity, basicity nanocatalyst performance and stability. C–O(H), CC–C, and C–O were the major functional clusters of the liquid yields surveyed from the FTIR spectrums during pyrolysis. A valuable liquid product such as trimethyl-(2-trimethylsilylphenyl)silane, cyclohexane-1,3-dione, 2-allylaminomethylene-5,5-dimethyl-, bis(2-ethylhexyl)phthalate (BEHP), etc. compounds were produced from the pyrolysis-catalytic steam reforming reaction. This sight is a crucial indication of utilizing microplastics pollution for value-added fuel production and decreasing the risk threats of marine life. [Display omitted] •Different ratios of Ni to Pt nanocatalysts over Ti-Al were synthesized.•Complete phenol conversion (99.6%) is achieved for the 4Ni-1Pt.•4Ni-1Pt nanocatalyst exhibited bifunctional properties.•Catalytic reforming of MPW produced several branched-chains aliphatics.