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Acta Armamentarii ›› 2017, Vol. 38 ›› Issue (2): 292-297.doi: 10.3969/j.issn.1000-1093.2017.02.012

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Research on the SynthesisCharacterization and Pulse Ultrasnic-assisted Extraction of a Low Melting Point Energetic Compound

LUO Jin, LIU Yu-cun, LIU Yan, WANG Jian-hua, CHAI Tao, YUAN Jun-ming, YU Yan-wu,CHANG Shuang-jun   

  1. (School of Chemical Engineering and Environment, North University of China, Taiyuan 030051, Shanxi, China)
  • Received:2016-10-11 Revised:2016-10-11 Online:2017-04-01

Abstract: 1-Methyl-3,5-dinitro-1,2,4-triazole (DNMT) is synthesized from dicyandiamide and methyl hydrazine via a two step procedure (condensation and oxidation). After purification, the melting point is 93~95 ℃. The structure of the target DNMT is characterized by 1H, 13C NMR, FT-IR, MS and elemental analysis. The thermal stability is studied by TG-DTA. The result shows that the thermal decomposition temperature is 281.5 ℃. The reaction mechanism of DNMT in synthesis is primarily discussed. The post- treatment technology is improved, and the method of ultrasonic-assisted liquid-liquid extraction (ULLE) is used to extract the target product with thermal ethyl acetate as extractant. The influence of extraction parameters, such as volume, temperature of extraction solvent, extraction time, etc., on extraction efficiency are investigated. The result shows that ULLE method is conducive to efficiently obtain highly pure product (≥98.68%, HPLC), and the overall yield is raised to 52.8%. Key

Key words: ordnancescienceandtechnology, energeticcompound, lowmeltingpoint, synthesis, ultrasonic-assistedliquid-liquidextraction

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