https://nova.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Promotion effects of pressure on polycyclic aromatic hydrocarbons and h₂ formation during flash pyrolysis of palm kernel shell https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:46367 Wed 16 Nov 2022 08:58:48 AEDT ]]> Catalytic reforming of palm kernel shell microwave pyrolysis vapors over iron-loaded activated carbon: enhanced production of phenol and hydrogen https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38198 Wed 11 Aug 2021 09:23:40 AEST ]]> Pressurized entrained-flow pyrolysis of lignite for enhanced production of hydrogen-rich gas and chemical raw materials https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:37723 2 and polyaromatics during lignite pyrolysis under pressurized entrained-flow conditions. The pyrolysis temperature and pressure ranged between 600-900 ℃ and 0.1-4.0 MPa, respectively, and were found to greatly influence the yield and composition of pyrolysis products. The results showed that the concentration of H2 in the light gas fraction increased drastically with pyrolysis temperature and pressure, reaching 91.69 vol% at 900 ℃ and 4.0 MPa, which corresponded to H2 generation of 0.27 m3/kg coal. The yield of polycyclic aromatic hydrocarbons (PAHs) such as naphthalene, biphenylene, fluorene, phenanthrene, pyrene, and fluoranthene was also promoted at elevated pyrolysis temperatures and pressures. The highest PAHs concentration of 90.4 area% in the pyrolysis oil was obtained at 900 ℃ and 4.0 MPa. It was also found that the changes in the hydrogen distribution under pressurized entrained-flow conditions mainly took place during the secondary pyrolysis reactions. It was postulated that hydrogen was formed via aromatization, condensation, aromatic ring growth mechanism, and direct cleavage reactions. The findings of this study showed that lignite could be efficiently converted to H2-rich gas, PAHs as chemical raw materials, and energy-dense lignite char via a novel poly-generation system based on pressurized entrained-flow pyrolysis.]]> Thu 25 Mar 2021 12:33:52 AEDT ]]> A review on biomass as a substitute energy source: Polygeneration influence and hydrogen rich gas formation via pyrolysis https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:53576 Mon 29 Jan 2024 18:20:35 AEDT ]]> Understanding the enhanced production of poly-aromatic hydrocarbons during the pyrolysis of lignocellulosic biomass components under pressurized entrained-flow conditions https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:43652 2H2 addition (HACA) was postulated to be the mechanism of the formation of PAHs. The 4-ring PAHs (pyrene, fluoranthene) and 3-ring PAHs (phenanthrene, fluorene) were found to dominate the lignin bio-oil, while the bio-oil from cellulose and xylan mainly contained 2-ring PAHs (naphthalene). Elevated pressures and temperatures were also found to significantly increase the selectivity of H2 in the bio-gas.]]> Mon 29 Jan 2024 17:50:37 AEDT ]]>