HAN-based green propellant, application, and its combustion mechanism

Katsumi, Toshiyuki; Inoue, T.; Nakatsuka, Junichi; Hasegawa, Keiichi; Kobayashi, Kiyokazu; Sawai, Sh.; Hori, Keiichi

doi:10.1134/s001050821205005x

Cited by 42 publications

(18 citation statements)

References 12 publications

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“…This compound has multiple advantages over hydrazine in terms of sensitivity, toxicity and volatility. [1][2][3][4] It is generally employed as a ternary system comprising HAN, water and fuel. While an aqueous solution facilitates versatile handling, the positive oxygen balance of the compound allows inclusion of compatible fuel components, which raises the performance level of the propellant formulations.…”

Section: Introductionmentioning

confidence: 99%

Cerium oxide based active catalyst for hydroxylammonium nitrate (HAN) fueled monopropellant thrusters

Agnihotri

Oommen

2018

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Cerium oxide based active catalyst for hydroxylammonium nitrate (HAN) fueled monopropellant thrusters

Agnihotri

Oommen

2018

RSC Adv.

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“…As such, there have been many experimental and theoretical studies concerning the combustion behaviour of the so-called next generation HAN-based propellants [4][5][6][7][8][9][10][11]. Previous research has demonstrated that some HAN-based solutions exhibit extremely high burning rates, and this property has limited the usefulness of such solutions in certain applications [3][4][5][6] because overly high burning rates can sometimes lead to serious accidents [12][13][14]. Therefore, the development of advanced techniques to control the combustion of HAN-based propellants is essential.…”

Section: Introductionmentioning

confidence: 99%

Decomposition Pathways for Aqueous Hydroxylammonium Nitrate Solutions: a DFT Study

Izato¹,

Koshi²,

Miyake³

2017

Cent. Eur. J. Energ. Mater.

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Hydroxylammmonium nitrate (hydroxylamine nitrate, HAN) is one of the most promising candidates as a replacement for commonly used liquid mono-propellants such as hydrazine. The reaction pathways involved in the initial and the catalytic decomposition of HAN in aqueous solution were determined using quantum chemistry calculations incorporating solvent effects. Optimized structures were obtained for the reactants, products and transition states at the ωB97XD/6-311++G(d,p)/SCRF = (solvent = water) level of theory and the total electron energies of these structures were calculated at the CBS-QB3 level of theory. In the initial decomposition, the ion-neutral NH3OH + -HNO3 reaction, the neutral-neutral NH3O-HNO3 reaction and the HNO3 self-decomposition pathways were all found to have reasonable energy barriers, with values of 91.7 kJ/mol, 88.7 kJ/mol and 89.8 kJ/mol, respectively. The overall reaction resulting from any of these pathways can be written as: HAN → HONO + HNO + H2O. The ionic reaction is dominant during the initial decomposition of HAN in aqueous solution because NH3OH+ and NO3 -are the major species in such solutions. We also developed six catalytic mechanisms and each of these schemes provided the same global reaction: NH2OH + HONO → N2O + 2H2O. The t-ONONO2 oxidizing scheme is the most plausible based on the energy barrier results.

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“…To reduce these costs, various low toxicity (so-called "green") propellants have been developed [1][2][3][4]. However, conventional monopropellant thruster catalysts cannot be applied to these green propellants because these propellants tend to generate higher flame temperatures and can also contain oxidizers, and the catalysts are unable to tolerate high-temperature and acidic environments [5].…”

Section: Introductionmentioning

confidence: 99%