摘要
本文利用飞行时间质谱和电子能谱检测了α-Pb(N_3)_2热分解和热爆炸过程的产物,提出了两种不同的反应机理;在热分解过程中,α-Pb(N_3)_2热分解步骤是N_3中π电子受激发生成N_3自由基,N_3自由基进一步相互碰撞生成N_2.在热爆炸过程中,系统中能量足够高,致使N_3中的π锻和σ键同时发生断裂,生成N原子和N_2分子。根据实测的数据,讨论了α-Pb(N_3)_2热分解和热爆炸化学反应机理的差别。
Products of slow thermal decomposition and fast therlnal explosion of α-Pb( N_3)_ 2 were detected by a time-flight mass spectrometer.Different mechanisms ofthese two reactions vvere determined.In slow thermal decomposition of -Pb (N_3)_2 ,thefirst step is excitation of ther π-electron in azide ion to form an azide radical.Then nitro-gen gas is formed through bimolecular decomposition of azide radicals,which is the rate- controlling step in the whole process。In thermal explosion of α-pb(N_3)_2 products are ni- trogen atom and nitrogen molecule。 Formed from simultaneous breakdown of π-and σ- boud in- N_3 because of the high energy released in the reaction system.
出处
《含能材料》
EI
CAS
CSCD
1994年第2期1-6,共6页
Chinese Journal of Energetic Materials
关键词
α-叠氮化铅
热分解
热爆炸
反应机理
α-lead azide,thermal decomposition,thermal explosion,reaction mecha-nism.