https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:52491 Wed 13 Mar 2024 13:56:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:22787 Wed 11 Apr 2018 12:02:05 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12135 Wed 11 Apr 2018 10:34:30 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55174 Tue 23 Apr 2024 09:45:56 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:5259 Sat 24 Mar 2018 07:46:35 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:21503 25 mol %) concentrations of potassium in the crystallisation solution; mol % is based only on K+ and NH4+. Co-recrystallised salts were characterise using X-ray diffraction (XRD), Scanning electron microscopy - energy dispersive spectroscopy (SEM-EDS), Inductively coupled plasma - optical emission spectroscopy (ICP-OES), and Thermogravimetric analyser and differential scanning calorimeter (TGA/DSC). In addition, we report concentration profiles of NO during thermal analyses of corecrystallised potassium ammonium nitrates. The results obtained from thermal decomposition of the co-recrystallised potassium ammonium nitrate salts showed decrease in production of NO. and 3-5 mol % K was the optimal concentration when compared with pure AN.]]> Mon 20 Nov 2023 15:36:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46146 4NO₃ and FeS₂, a major component of reactive ground. Voltammetric processes corresponding to the Fe(II)/Fe(III) redox couple and the reduction of nitrate are observed. This is significant as the existing reaction mechanism shows nitrate reacting in the electrolyte, but not being reduced on the surface of the FeS₂. An irreversible oxidation occurs at ~0 V versus SCE associated with the re-oxidation of species formed at lower potentials. This is not associated with a change in the potential of the electrolyte, indicating a surface reaction. With the use of thermocouples, an exothermic reaction above 0.4 V is observed. FeS₂ is initially unreactive in NH₄NO₃ solutions. After FeS₂ exposure to potentials above 0.6 V versus SCE, the material becomes active and catalytic in nature. Material reacted following the industry standard Australian Explosives Industry Safety Group (AEISG) test method shows similar catalytic behaviour in the presence of fresh NH₄NO₃. This is significant for the safety and testing of reactive ground, as even FeS₂ that has completed reaction still has the potential to undergo further reaction if introduced to fresh NH₄NO₃.]]> Fri 11 Nov 2022 18:30:55 AEDT ]]>