Energy-releasing properties of metal hydrides (MgH2, TiH2 and ZrH2) with molecular perovskite energetic material DAP-4 as a novel oxidant

Fang, Hua; Deng, Peng; Li, Rui; Han, Kehua; Zhu, Pengfei; Nie, Jianxin; Guo, Xueyong

doi:10.1016/j.combustflame.2022.112482

Cited by 4 publications

(2 citation statements)

References 30 publications

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“… 8 The effects of titanium hydride (TiH 2 ), zirconium hydride (ZrH 2 ), and MgH 2 on combustion were studied by Fang et al, in which the addition of the metal hydrides resulted in more intense flames and higher combustion rates. 9 Particularly, the sample with MgH 2 as an additive had the highest combustion rate compared to those of TiH 2 and ZrH 2 . Young et al investigated the ignition behavior of aluminum hydride (AlH 3 ) microparticles and found that their ignition threshold was considerably lower than aluminum (Al) microparticles.…”

Section: Introductionmentioning

confidence: 93%

“…Xi et al found that combining metal hydrides with boron particles enhances the ignition by releasing heat, thus increasing the temperature of boron and facilitating its burning . The effects of titanium hydride (TiH 2 ), zirconium hydride (ZrH 2 ), and MgH 2 on combustion were studied by Fang et al, in which the addition of the metal hydrides resulted in more intense flames and higher combustion rates . Particularly, the sample with MgH 2 as an additive had the highest combustion rate compared to those of TiH 2 and ZrH 2 .…”

Section: Introductionmentioning

confidence: 99%

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Enhancing the Combustion of Magnesium Nanoparticles via Low-Temperature Plasma-Induced Hydrogenation

Wagner,

Kim,

Chowdhury

et al. 2023

ACS Appl. Mater. Interfaces

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The hydrogenation of metal nanoparticles provides a pathway toward tuning their combustion characteristics. Metal hydrides have been employed as solid-fuel additives for rocket propellants, pyrotechnics, and explosives. Gas generation during combustion is beneficial to prevent aggregation and sintering of particles, enabling a more complete fuel utilization. Here, we discuss a novel approach for the synthesis of magnesium hydride nanoparticles based on a two-step aerosol process. Mg particles are first nucleated and grown via thermal evaporation, followed immediately by in-flight exposure to a hydrogen-rich low-temperature plasma. During the second step, atomic hydrogen generated by the plasma rapidly diffuses into the Mg lattice, forming particles with a significant fraction of MgH2. We find that hydrogenated Mg nanoparticles have an ignition temperature that is reduced by ∼200 °C when combusted with potassium perchlorate as an oxidizer, compared to the non-hydrogenated Mg material. This is due to the release of hydrogen from the fuel, jumpstarting its combustion. In addition, characterization of the plasma processes suggests that a careful balance between the dissociation of molecular hydrogen and heating of the nanoparticles must be achieved to avoid hydrogen desorption during production and achieve a significant degree of hydrogenation.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Enhancing the Combustion of Magnesium Nanoparticles via Low-Temperature Plasma-Induced Hydrogenation

Wagner,

Kim,

Chowdhury

et al. 2023

ACS Appl. Mater. Interfaces

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Construction of Fe Nanoparticles Interfacial Layer on Micron Al Surface: Boosting the Efficient Energy Release of High‐Energy DAP‐4 as a Gradient Catalyst

Kou,

Lu,

et al. 2024

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The high‐energy (H2dabco)[NH4(ClO4)3] (DAP‐4) with excellent energetic performance attracts wide attention from researchers. The investigation of its interaction with the Aluminum (Al) is of great importance. However, the higher ignition threshold of DAP‐4 and the dense oxide layer (Al2O3) of Al severely limit the energy release efficiency of Al/DAP‐4. In this study, a new idea to is first proposed to improve and adjust the thermal decomposition and combustion performance of Al/DAP‐4 by constructing a highly dispersed iron (Fe) nanoparticle interfacial layer. It acts as a gradient catalyst to promote the thermal decomposition and combustion of DAP‐4 and Al, and it also act as an oxygen transport channel to promote the contact and reaction of oxidizing gases with the internal reactive Al powder. It reduces the thermal decomposition temperature of Al@Fe‐3/DAP‐4 from 386.30 °C (Al/DAP‐4) to 349.48 °C and leads to the vigorous combustion. Theoretical calculations show that Fe nanoparticle interfacial layer can facilitate the transport of oxygen through the established oxygen transport channels, and it can also significantly improve the energetic properties of Al@Fe‐3/DAP‐4 composites. In conclusion, the new approach is proposed to improve the performance of metal fuel/oxidizer composites by constructing interfacial layers, which is expected to promote their practical applications.

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Review of the decomposition and energy release mechanisms of novel energetic materials

Zhong,

Zhang

2024

Chemical Engineering Journal

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Energy-releasing properties of metal hydrides (MgH2, TiH2 and ZrH2) with molecular perovskite energetic material DAP-4 as a novel oxidant

Cited by 4 publications

References 30 publications

Enhancing the Combustion of Magnesium Nanoparticles via Low-Temperature Plasma-Induced Hydrogenation

Enhancing the Combustion of Magnesium Nanoparticles via Low-Temperature Plasma-Induced Hydrogenation

Construction of Fe Nanoparticles Interfacial Layer on Micron Al Surface: Boosting the Efficient Energy Release of High‐Energy DAP‐4 as a Gradient Catalyst

Review of the decomposition and energy release mechanisms of novel energetic materials

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