/manager/Index ${session.getAttribute("locale")} 5 A review on the production of nitrogen-containing compounds from microalgal biomass via pyrolysis /manager/Repository/uon:42886 Tue 06 Sep 2022 11:58:22 AEST ]]> Formation of nitrogen-containing compounds during microwave pyrolysis of microalgae: product distribution and reaction pathways /manager/Repository/uon:30924 Thu 30 Jan 2020 10:16:09 AEDT ]]> The transformation of nitrogen during pressurized entrained-flow pyrolysis of Chlorella vulgaris /manager/Repository/uon:37537 Chlorella vulgaris was systematically investigated at the temperatures of 600–900 °C and pressures of 0.1–4.0 MPa. It was found that pressure had a profound impact on the transformation of nitrogen during pyrolysis. The nitrogen retention in bio-char and its content in bio-oil reached a maximum value at 1.0 MPa. The highest conversion of nitrogen (50.25 wt%) into bio-oil was achieved at 1.0 MPa and 800 °C, which was about 7 wt% higher than that at atmospheric pressure. Higher pressures promoted the formation of pyrrolic-N (N-5) and quaternary-N (N-Q) compounds in bio-oil at the expense of nitrile-N and pyridinic-N (N-6) compounds. The X-Ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) results on bio-chars clearly evidenced the transformation of N-5 structures into N-6 and N-Q structures at elevated pressures. The nitrogen transformation pathways during pyrolysis of microalgae were proposed and discussed.]]> Thu 04 Feb 2021 16:34:37 AEDT ]]> Comparative study on flash pyrolysis characteristics of microalgal and lignocellulosic biomass in entrained-flow reactor /manager/Repository/uon:31123 Sat 24 Mar 2018 08:44:41 AEDT ]]> Structural and electronic engineering of biomass-derived carbon nanosheet composite for electrochemical oxygen reduction /manager/Repository/uon:39802 vs RHE), a limiting current density of −5.24 mA cm⁻², and an electron transfer number of 3.87) in 0.1 M KOH solution, which are comparable to that of the benchmark Pt/C electrode, while the former presented better selectivity and short-term durability. The synergy of the formed multi-heterointerface/chemical phases of Ta-based compounds and high content of N-pyridinic, N-quaternary, and N-nitride (metal-N) nitrogen functionalities in carbon were experimentally revealed as the major feature contributing to the enhanced ORR activity. This work sheds light on a sustainable and effective strategy to design and synthesize cost-effective and high-performance carbon-based composite electrocatalysts from fruit waste biomass and unlocks the superb intrinsic catalytic activity of transition metal compounds.]]> Mon 29 Jan 2024 17:47:48 AEDT ]]> Pressurized entrained-flow pyrolysis of microalgae: Enhanced production of hydrogen and nitrogen-containing compounds /manager/Repository/uon:47513 Mon 23 Jan 2023 12:15:27 AEDT ]]> Impact of pressure on the carbon structure of char during pyrolysis of bituminous coal in pressurized entrained-flow reactor /manager/Repository/uon:42309 c), interlayer spacing (d002) and lateral size of the graphite structures (La) were used to evaluate the graphitic structures in chars. The results showed an increase in Lc,, La, and the average number of graphene sheets with pyrolysis pressure, indicating a more ordered carbon structure at elevated pressures. The d-spacing of char was in the range of 3.34-3.37 Å, similar to typical graphitic structures.]]> Mon 22 Aug 2022 09:14:19 AEST ]]>