Detailed kinetic model for ammonium dinitramide decomposition

Izato, Yu‐ichiro; Miyake, Akira

doi:10.1016/j.combustflame.2018.09.013

Cited by 24 publications

(12 citation statements)

References 40 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under these conditions, ADN dissociates to form either an ionic pair (DN − and NH 4 + ) or an acid‐base pair (HDN and NH 3 ). Our previous work using a computational approach established that dissociated DN − and NH 4 + are the most thermally preferred of all potential species in a high permittivity solution. Specifically, the Van der Waals complex formed by ADN, which is a complex between un‐dissociated DN − and NH 4 + molecules, has a low Gibbs free energy similar to that of DN − , while the acid‐base pair exhibits a higher Gibbs energy, and so is not preferred.…”

Section: Resultsmentioning

confidence: 99%

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

Izato

Matsushita

Shiota

et al. 2020

Propellants Explo Pyrotec

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

Izato

Matsushita

Shiota

et al. 2020

Propellants Explo Pyrotec

Self Cite

View full text Add to dashboard Cite

show abstract

“…In the case of ammonium nitrite reactions taken place, the chemical kinetic model was augmented by ammonium nitrite reaction from the model of Izato and Miyaki. 27…”

Section: Engine Simulation Methodsmentioning

confidence: 99%

“…As alternative to hydrogen, the ammonia could be reacted with ozone produced from atmospheric air, to produce some ammonium nitrite within the aqueous ammonia, which could be used to increase the autoignition quality of aqueous ammonia. This was assumed to be 1 ammonium nitrite molecule per 99 ammonia molecules, and its ignition was simulated by adding the ammonium nitrite reaction from the model of Izato and Miyake 27 shown in equation (2), to the model of Song et al 26…”

Section: Hydrogen or Ammonium Nitrite As Potential Ignition Promotersmentioning

confidence: 99%

Aqueous solution of ammonia as marine fuel

Schönborn

2020

Proceedings of the Institution of Mechanical Engineers, Part M:

View full text Add to dashboard Cite

The ignition of ammonia in aqueous solution was simulated in a two-stroke compression ignition engine model. Zero-dimensional chemical kinetic calculations were used to estimate the ignition timing of fuel air mixtures in homogeneous charge compression ignition and diesel combustion modes. The fuel consisted of a 25% m/m aqueous solution of ammonia and pure ammonia for comparison. Ignition was studied by varying the geometric compression ratio of the engine. To ignite ammonia in aqueous solution a minimum compression ratio of 25 was necessary under homogeneous charge compression ignition combustion conditions, whereas under diesel combustion conditions a minimum compression ratio of 27 was required. Ammonia containing ammonium nitrite or hydrogen were two potential ammonia derivatives that were shown to enhance aqueous ammonia ignition in the simulations, and allowed ignition to take place at a compression ratio of 24 for diesel combustion. When comparing the ignition of aqueous ammonia solution to pure ammonia, the minimum compression ratio necessary to ignite pure ammonia was approximately 24.8 and that for aqueous ammonia 26.7 in diesel combustion. This led to the conclusion that aqueous ammonia is not prohibitively more difficult to ignite than pure ammonia. Ammonia containing ammonium nitrite or hydrogen were found to be potential pilot fuels.

show abstract

“…The details of thermal decomposition properties has a significant influence on the combustion behavior, forecasting aging properties, and selecting suitable stabilizing agent for solid propellant [7,8]. Many research works with regard to the thermal decomposition mechanism of pure ADN have been carried out [5][6][7][8][9]. Yang et al [10] presented a comprehensive review on thermal decomposition and combustion of ADN.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Thermal Behavior of Ammonium Dinitramide with Different Copper‐Based Catalysts

Li¹,

Xie²,

Wang³

et al. 2020

Propellants Explo Pyrotec

View full text Add to dashboard Cite

A systematic investigation of the effects of different copper catalysts on the thermal behavior for ammonium dinitramide (ADN) was performed. ADN/copper catalyst mixtures were prepared in the ratio of 100/5 by grinding, and all samples were subjected to TG-DSC studies using thermo-gravimetric analysis coupled to Fourier Transformed Infrared Spectrometry (TGA-FTIR) and Mass Spectrometry, which obtained the detailed information of evolved gas products on pyrolysis and oxidative degradations. Four copper-series catalysts including copper chromate (CuCrO 4), copper chromite (Cu 2 Cr 2 O 5), copper 2,4-di-hydroxybenzoate (β-Cu) and metal-organic framework copper (MOFÀ Cu) were employed to research the appearance morphology and thermal behavior of the samples. TG-DSC analysis of the decomposition for ADN/catalyst revealed that copper chromite and β-Cu exhibit higher catalytic activity than copper chromate due to their greater acceleration of thermal decomposition for ADN. Besides, though MOFÀ Cu slightly promote the thermal decomposition of ADN, the ADN/MOFÀ Cu system release more heat during exothermic reaction owing to the high energy of MOFÀ Cu.

show abstract

Detailed kinetic model for ammonium dinitramide decomposition

Cited by 24 publications

References 40 publications

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

The Electrolysis of Ammonium Dinitramide in Dimethyl Sulfoxide

Aqueous solution of ammonia as marine fuel

Investigation on the Thermal Behavior of Ammonium Dinitramide with Different Copper‐Based Catalysts

Contact Info

Product

Resources

About