Synthesis and Properties of Two Energetic Salts Based on1-Amino-2-nitroguanidine

Journal of the Brazilian Chemical Society

Xinghui Jin¹  Bingcheng Hu¹  Zuliang Liu¹ 

关键词: 1-amino-2-nitroguanidine;    energetic salts;    thermodynamic properties;    electronic structure;    detonation properties;   

DOI  :  10.5935/0103-5053.20140226

来源: SciELO

【 摘 要 】

Two nitrogen-rich energetic materials based on 1-amino-2-nitroguanidine weresynthesized. The thermal behavior, thermodynamic properties, electron structures anddetonation properties were investigated. The dynamic (DSC) curves show that1-amino-2-nitroguanidinium 2,4,5-trinitroimidazole (salt 1) can be used as castexplosives. These curves allow determination of their melting points andthermodynamic parameters such as activation energy (Ek, salt 1, 282.1 kJ mol–1; alt 2, 116.2 kJ mol–1;Eo, salt 1, 275.0 kJ mol–1; salt 2, 116.9 kJ mol–1), entropy of activation (ΔS≠, salt 1,395.7 J mol–1 K–1; salt 2, 5.8 J mol–1 K–1), enthalpy of activation (ΔH≠, salt 1,278.7 kJ mol‑1; salt 2, 113.1 kJ mol–1), free energy ofactivation (ΔG≠, salt 1, 117.6 kJ mol–1; salt2, 110.9 kJ mol–1), heat of formation (∆Hf0, salt 1, 264.7 kJ mol–1; salt 2, 487.6 kJ mol–1)and critical temperature of thermal explosion (Tb, salt1, 412.3 K; salt 2, 388.9 K), suggesting that the synthesized salts are safe enoughduring storage or usage. In view of the detonation pressure (P, salt1, 30.2 GPa; salt 2, 29.1 GPa) and detonation velocity (D, salt 1,8398 m s–1; salt 2, 8334 m s–1), it is predicted that both1-amino-2-nitroguanidine-based salts have the potential to be the useful energeticmaterials.

【 授权许可】

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