https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39888 Thu 21 Jul 2022 09:51:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21460 –1 region of infrared (IR) spectra. The density of alkyl chains and cross-linking reactions affected the yield of tar. The aromaticity of char increased with an increasing pyrolysis temperature. The abundance of C═O and COOH structures decreased drastically with increasing temperature. A lower concentration of active sites on high-temperature chars resulted in lower combustion reactivity compared to low-temperature chars. The C–O and C═C groups decreased as the temperature increased possibly because of the aromatic condensation. The extent of aromatic substitution decreased up to 650 °C. At temperatures above 650 °C, the degree of aromaticity was strengthened and larger condensed aromatic nuclei were formed. Brunauer–Emmett–Teller (BET) surface area analysis revealed that high-temperature chars have significantly higher surface area compared to chars produced at low temperatures. However, the concentration of active sites was lower in high-temperature chars. Therefore, it can be concluded that diffusion was the main reaction mechanism in high-temperature chars.]]> Sat 24 Mar 2018 08:05:45 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18735 Sat 24 Mar 2018 08:02:46 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20358 Sat 24 Mar 2018 07:58:07 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:18400 Sat 24 Mar 2018 07:52:34 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21018 Sat 24 Mar 2018 07:50:32 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:29825 2 as the renewable energy storage medium was carried out. Liquid fuels that can be burned either in boilers or compression ignition engines to generate electricity have been the target products. The CO₂ and H₂O produced from combustion are recirculated back to the synthesis units, thus forming a closed cycle of “renewable energy (unstable energy supply) + CO₂ + H₂O → liquid fuels → electricity (stable supply)”. This novel closed loop energy storage process integrated with a 670 MW supercritical power plant was analyzed using the Aspen Plus software package. Methanol was selected as the targeted liquid fuel through three major synthesis routes: CO + H₂, CO₂ + H₂ and CO₂ + H₂O, in which CO and H₂ came from the electrolysis of CO₂ and H₂O. The performances of the three methanol synthesis routes were thermodynamically analyzed. The results show that the optimal methanol synthesis route is the direct conversion of CO₂ and H₂O through electrocatalysis when CO₂ conversion is above 42%, while when CO₂ conversion is below 42% the best choice turned out to be the CO hydrogenation. The direct conversion of (CO₂ + H₂O) using electrocatalysis method was adopted as the liquid fuel synthesis route for the near-zero-carbon-emission power plant. The overall CO₂ emission from the near-zero-carbon-emission power plant is 44.13 kg/MWh accounting for just 6.45% of the advanced coal fired power plant.]]> Sat 24 Mar 2018 07:40:52 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26575 Sat 24 Mar 2018 07:26:11 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:25540 Sat 24 Mar 2018 07:26:05 AEDT ]]>