Thermal decomposition of solid mixtures of 2-oxy-4,6-dinitramine-s-triazine (DNAM) and phase stabilized ammonium nitrate (PSAN)

Simões, Pedro; Pedroso, Fiona L.; Portugal, António; Campos, J.

doi:10.1016/s0040-6031(00)00627-4

Cited by 15 publications

(7 citation statements)

References 26 publications

(23 reference statements)

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“…Small peaks appeared at 87 C, 176 C and larger peaks at 246 C and 282 C can be ascribed to the decomposition of ammonium nitrate. 13,14 The weight loss of the ammonium nitrate decomposition is 34%, which is close to the test value of 37.8%. There is no weight loss or heat release above 282 C, suggesting that ammonium nitrate decomposed completely within the temperature of 300 C. However, mass losses occur at different temperature when the suspension (AlPO 4 nano-particles) is mixed with LiNi 1/3 Co 1/3 Mn 1/3 O 2 and then analyzed by thermal analysis.…”

Section: Thermal Analysissupporting

confidence: 70%

Effect of heat-treatment on the surface structure and electrochemical behavior of AlPO4-coated LiNi1/3Co1/3Mn1/3O2 cathode materials

Wang

Guo

et al. 2013

J. Mater. Chem. A

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The surface of LiNi 1/3 Co 1/3 Mn 1/3 O 2 particles were modified by AlPO 4 . Influences of heat-treatment on coating were studied by X-ray diffraction (XRD) and thermal analysis. Electrochemical tests and electrochemical impedance spectroscopy (EIS) were conducted. The results show that AlPO 4 can react with LiNi 1/3 Co 1/3 Mn 1/3 O 2 and an aluminum-containing-spinel phase of M 0 1 M 2 O 4 (M ¼ Ni, Co, Mn, M 0 ¼ Al) is formed at above 700 C. The high surface content of aluminum is in favor of forming a stable solid electrolyte film (SEI) on the surface of LiNi 1/3 Co 1/3 Mn 1/3 O 2 during the first-two-charge-discharge processes. NO 3 À from the coating process may have reacted with LiNi 1/3 Co 1/3 Mn 1/3 O 2 . The resultant decompose at the temperature of above 400 C. Existence of NO 3 À in the cathode is harmful to its electrochemical properties. The LiNi 1/3 Co 1/3 Mn 1/3 O 2 coated with 1 wt% AlPO 4 delivers a high discharge capacity and shows excellent capacity retention at 55 C/0.5 C.

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Section: Thermal Analysissupporting

confidence: 70%

Effect of heat-treatment on the surface structure and electrochemical behavior of AlPO4-coated LiNi1/3Co1/3Mn1/3O2 cathode materials

Wang

Guo

et al. 2013

J. Mater. Chem. A

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“…Phase stabilization of AN with metal oxides is beneficial with respect to burning rate, ignition and other properties [9]. For example, copper oxide significantly influences the transition temperature of AN by the formation of a solid solution of copper(II) diammine dinitrate in the AN crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

Phase Stability of Ammonium Nitrate with Organic Potassium Salts

Wang

2016

Cent. Eur. J. Energ. Mater.

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Abstract:A study has been undertaken on the effect of additives on the phase transition of ammonium nitrate(V) (AN). Results obtained using Differential Scanning Calorimetry (DSC) showed that organic compounds and potassium salts of organic compounds have an effect on the phase transition behavior of AN. The samples were further analyzed using infrared (IR) and powder X-ray diffraction (XRD). The mechanism of phase stabilization of AN by compounds of this kind was examined. The present study showed that the influence of additives on the phase transition of AN occurs through the polar groups that are involved in intermolecular interactions of orbital and electrostatic types that form new hydrogen bonds. AN exists in only one phase in the temperature range from 30 °C to +100 °C, when a potassium salt of organic compounds was added. However, with organic compounds, the III→II phase transition was changed. IR and XRD of composites are characterized by new intermolecular interactions. Compacted samples of AN containing potassium salts of organic compounds exhibited better stability than AN containing organic compounds to multiple cyclic changes within a temperature range. This we named 'freezing and thawing analysis'. Additives have two functions on the AN phase transition. First, solid solutions of AN mixture were formed for K + replacement of NH4 + . Second, hydrogen bonds formed, which caused AN and salts of organic compounds to interact intimately

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“…As the amount of PSAN is decreased in the mixtures, the corresponding lower liquid phase leads to remarkable changes in the overall decomposition process. For these cases, an early exothermic peak ascribable to the thermolysis of DNAM is still being detected, although in a more limited extent, indicating that only a partial and slower decomposition occurs at lower temperatures (19) .…”

Section: Thermal Behavior Of Solid Mixtures Of Dnam and Psanmentioning

confidence: 98%

“…The thermal behavior of solid mixtures of DNAM and PSAN over the DNAM=PSAN mass ratios ranging from 10=90 to 90=10 was recently investigated (19) . The results are summarized in Figure 1 in the form of thermoanalytical curves (the thermoanalytical results reported in this paper were performed on a Rheometric Scientific-STA 1500 equipment, at 10 C min À1 , using N 2 as purge gas).…”

Section: Thermal Behavior Of Solid Mixtures Of Dnam and Psanmentioning

confidence: 99%