固体1,1-胺-2,2-丁乙烯 (FOX-7) 的紫外线发起的分解
Andrew M Turner1,2, Joshua H Marks1,2, Jasmin T Lechner3
1Department of Chemistry, University of Hawaii, Honolulu, Hawaii 96822, United States.
The journal of physical chemistry. A
|September 8, 2023
概括
用202纳米光子对FOX-7能量材料的光解揭示了分解路径. 这项研究确定了关键的中间体和产品,为能量化合物的分解提供了洞察力.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 化学物理 化学物理
背景情况:
- 能量材料需要详细了解分解机制的安全性和应用.
- FOX-7 (1,1-diamino-2,2-dinitroethylene) 是一种高能量密度的材料.
- 光解提供了一种可控的方法,以在低温下启动分解.
研究的目的:
- 为了研究由202nm光解启动的FOX-7的分解途径.
- 将光解结果与低能光子和电子辐射的结果进行比较.
- 为了识别FOX-7分解的反应中间体和最终产品.
主要方法:
- 在5K时使用202nm光子对FOX-7进行固态光解.
- 使用富里埃变换红外光谱法 (FTIR) 监测分解产品.
- 通过电子冲击四极质谱法 (EI-QMS) 和光离子化飞行时间质谱法 (PI-ReTOF-MS) 分析升华产品.
主要成果:
- 在FTIR中检测到CO2,CO,CN和OCN在照射后.
- 质量管理系统在升级产品中确定了H2O,CO,NO,CO2和NCCN.
- 在PI-ReTOF-MS中,发现了NH2OH,NH2NO和基尿素等中间体,将它们与氨和氧化的氧化联系起来.
结论:
- 在202 nm的FOX-7光解导致分解产物的复杂混合物.
- 反应性氧中间体和酸到酸盐的同质化是FOX-7分解的关键早期步骤.
- 这些发现为了解能量材料的反应性和分解提供了有价值的数据.
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