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作 者:王友兵[1] 黄凤臣[1] 张蒙蒙[1] 胡琳琳[1] 周杰文[1] 张创军[1]
出 处:《含能材料》2015年第1期29-32,共4页Chinese Journal of Energetic Materials
摘 要:研究了氧化2,6-二氨基-3,5-二硝基吡嗪(ANPZ)合成2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的千克级工艺。LLM-105收率为98.3%,纯度96.4%。降低了三氟乙酸(TFA)用量。采用红外、元素、核磁、质谱表征了LLM-105的结构。采用中和、酸化、蒸馏的方法,研究了TFA母液回收的千克级工艺,回收率为85.4%,纯度99.7%。回收TFA用于ANPZ氧化反应,LLM-105收率为97.8%。探讨了影响氧化反应的因素。最佳工艺参数为:m(ANPZ)∶V(H2O2)=1∶1.8,m(ANPZ)∶V(TFA)=1∶5,反应温度25~30℃,反应时间14 h;回收TFA的最佳工艺参数为,质量比m(TFA)∶V(H2SO4)=1∶1.0。The technology for synthesizing 2,6-diamino-3,5-dinitropyrazine-l-oxide ( LLM-105 ) was studied by oxidation of 2,6-di- amino-3,5- dinitropyrazine(ANPZ) on kilogram scale. The yield of LLM-105 is 98.3% and its purity 96.4%. The dosage oftrifr luoroacetic acid (TFA) is reduced. The structure of LLM-105 was characterized by IR, elemental analysis,'H NMR and MS. The recovery technology of TFA mother solution was studied by neutralization, acidification and distillation on kilogram scale. The re- covery of TFA is 85.1% and its purity 99.8%. Using the recovery TFA for the oxidation reaction of ANPZ, the yield of LLM-105 can be 97.8%. The factors affecting the oxidation reaction were discussed. The optimum technology parameters of the oxidation reaction are: m(ANPZ) : V(H202)=1:1.8, m(ANPZ) : V(TFA) =1:5, reaction temperature 25-30℃, reaction time 14 h. The optimum technology parameter of recycling of TFA is m(TFA) : V(H2SO4)=1 : 1.0.
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