Thermal and evolved gas analyses of decomposition of ammonium dinitramide-based ionic liquid propellant using TG–DSC–HRTOFMS

Izato, Yu‐ichiro; Shiota, Kento; Satoh, Kenta; Satoh, Takashi; Yahata, Yukinori; Habu, Hiroto; Miyake, Akira

doi:10.1007/s10973-019-08475-3

Cited by 7 publications

(2 citation statements)

References 36 publications

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“…ADN (ADN dissolved in deionized water) using TG/FTIR analyzer, and the major species observed remained to be N 2 O, NO 2 , H 2 O, and NH 3 . Izato et al [12] carried out the thermal and evolved gas analyses to assess the decomposition of an ionic liquid propellant consisting of ADN, methylammonium nitrate (MMAN) and urea, using TG/ DSC/TOF/MS. ADN/MMAN and ADN/MMAN/urea mixtures were found to decompose and form NH 3 , H 2 O, HCN, CO, N 2 , CH 2 O, CH 3 NH 2 , HNCO, CO 2 , N 2 O, and HNO 3 .…”

Section: Introductionmentioning

confidence: 99%

Insight into thermal decomposition behavior of ammonium dinitramide‐based liquid propellant through reactive molecular dynamics simulations

Meng,

Zhang,

Guo

et al. 2023

Propellants Explo Pyrotec

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The thermal decomposition characteristics and fuel oxidation mechanism of ammonium dinitramide (ADN)‐based liquid propellant are of great practical significance, but it is difficult to detect the whole intermediates and products using traditional experimental methods. In this paper, the thermal decomposition of ADN‐based liquid propellant at different temperatures (1500, 2000, 2500, and 3000 K) was simulated using the reactive molecular dynamics method. The effect of temperature on the thermal decomposition of propellant and the distribution of the main products were investigated. The results showed that the temperature played a role in promoting the decomposition of propellant. The main products of ADN‐based liquid propellant were N2, H2O, NH3, HNO3, ⋅NHO, CH2O, CO2, and NO2, while their evolution and generation pathways were also described in detail. The initial decomposition of ADN was the breakage of N−H bonds in ⋅NH4 or N−N/N−O bonds in ⋅N(NO2)2, and methanol generated free radicals by dehydrogenation. There was no direct chemical reaction between ADN and methanol, and the interaction was accomplished through the generation and consumption of free radicals. H2O provided a large amount of ⋅H and ⋅HO leading to a lower activation energy of ADN in propellant than that from reference. The overall reaction mechanism of the liquid propellant was deduced. The results would help to further investigate the reaction mechanism of ADN‐based liquid propellants.

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Section: Introductionmentioning

confidence: 99%

Insight into thermal decomposition behavior of ammonium dinitramide‐based liquid propellant through reactive molecular dynamics simulations

Meng,

Zhang,

Guo

et al. 2023

Propellants Explo Pyrotec

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show abstract

“…A previous study by our group established that a binary mixture of ADN and monomethylamine nitrate (MMAN) produced a deep eutectic IL at room temperature. The resulting mixture had a melting point of 3 °C (far less than the melting points of pure ADN and MMAN: 93 and 109 °C) but was still difficult to ignite as a result of its high thermal stability .…”

Section: Introductionmentioning

confidence: 99%

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

Izato

Matsushita

Shiota

et al. 2020

Propellants Explo Pyrotec

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This work investigated the electrolysis of ammonium dinitramide (ADN: NH 4 N(NO 2) 2) in dimethyl sulfoxide (DMSO). Various fundamental electrolysis properties of ADN were assessed based on an electrochemical study and the associated mechanisms were examined based on a quantum chemical approach. ADN exhibited three redox peaks at À 0.69, À 1.16 and À 1.52 V, and two oxidation peaks at 0.34 and 0.50 V (vs Ag/AgCl) at a scan rate of 50 mV s À 1 during cyclic voltammetry trials with a platinum electrode. Ultraviolet-visible spectra of ADN in DMSO were also acquired to determine temporal changes under galvanostatic reduction conditions. These spectra showed that a continuous current in conjunction with an applied voltage of À 1.5 V decomposed the ADN, but were unable to elucidate electrolysis products. Quantum chemistry calculations identified possible pathways for the electrolysis of ADN in DMSO, and indicated that reduced ADN rapidly decomposes to form NH 3 , N 2 O, NO 2 and OH À. The associated Gibbs energy barrier was determined to be almost 0 kJ mol À 1 when calculated at the CBS-QB3//ωB97X-D/6-311 + + G(d,p)/SCRF = (SMD, solvent = dmso) level of theory. These results suggest that ADN can undergo electrolysis in a solvent for which the potential window is sufficiently wide given the application of the appropriate voltage.

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Catalytic effect and mechanism of graphene-salen Fe nanocomplex on the pyrolysis of energetic TKX-50

Zhang,

Zhao,

Jiang

et al. 2023

J Therm Anal Calorim

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Thermal and evolved gas analyses of decomposition of ammonium dinitramide-based ionic liquid propellant using TG–DSC–HRTOFMS

Cited by 7 publications

References 36 publications

Insight into thermal decomposition behavior of ammonium dinitramide‐based liquid propellant through reactive molecular dynamics simulations

Insight into thermal decomposition behavior of ammonium dinitramide‐based liquid propellant through reactive molecular dynamics simulations

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

Catalytic effect and mechanism of graphene-salen Fe nanocomplex on the pyrolysis of energetic TKX-50

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