Journal of Thermal Analysis and Calorimetry

, Volume 138, Issue 3, pp 1853–1861 | Cite as

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

  • Yu-ichiro IzatoEmail author
  • Kento Shiota
  • Kenta Satoh
  • Takashi Satoh
  • Yukinori Yahata
  • Hiroto Habu
  • Atsumi Miyake


Thermal and evolved gas analyses were carried out to assess the decomposition of an ionic liquid propellant consisting of ammonium dinitramide (ADN), methylammonium nitrate (MMAN) and urea, using thermogravimetry–differential scanning calorimetry–high-resolution time-of-flight mass spectrometry (TG–DSC–HRTOFMS). This technique simultaneously assesses the thermal and evolved gas behavior and is able to distinguish between products having similar mass-to-charge ratios, based on accurate mass determinations. ADN/MMAN and ADN/MMAN/urea mixtures were found to decompose to form NH3, H2O, HCN, CO, N2, CH2O, CH3NH2, HNCO, CO2, N2O and HNO3, and possible reaction schemes for the decomposition processes were developed. Interactions between ADN and MMAN appear to enhance the generation of N2, while the presence of urea reduces the net exothermic heat of reaction due to the endothermic pyrolysis reaction of urea to NH3 and HNCO, followed by the reaction HNCO + H2O → NH3 + CO2.


Ammonium dinitramide Ionic liquid propellant Thermal decomposition Evolved gas analysis TG–DSC–HRTOFMS 



This research was supported by JSPS KAKENHI Grant Number 17H00844.

Supplementary material

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Supplementary material 1 (DOCX 1450 kb)


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.Graduate School of Environment and Information SciencesYokohama National UniversityYokohamaJapan
  2. 2.Institute of Advanced SciencesYokohama National UniversityYokohamaJapan
  3. 3.Application GroupNETZSCH Japan K.K.YokohamaJapan
  4. 4.MS Research and Development Department, MS Business UnitJEOL Ltd.AkishimaJapan
  5. 5.Division for Space Flight Systems, Institute of Space and Astronautical Science (ISAS)Japan Aerospace Exploration Agency (JAXA)SagamiharaJapan

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