Green Synthesis Of Rdx

RDX is an important nitramine explosive. Sources of raw materials are broad. RDX has large power and a good chemical stability. Environmental protection is becoming important now. Waste acid treatment has become a problem. Therefore, searching for a green nitrolysis agent has become important in explosives research.N₂O₅ is a novel green nitrification technology. This technique shows three advantages: low reaction temperature, mild reaction conditions and separate products easily. Therefore, the study of N₂O₅/HNO₃ nitrolysis system is conducive to improve the treatment of waste acid.In this paper,a method for the preparation of RDX was proposed,which complied with the requirements of the environmental protection. Choosing three different methods synthesis hexahydro-1,3,5-triacetyl-s-triazine (TRAT). Sulfuric acid was used as catalyst. And then preparation of RDX was attempted, using dinitrogen pentroxide. Choose the optimization of process conditions. In three different methods, optimum conditions were gained. The ratio of 13,5-trioxane and acetonitrile was 1:2.The ratio of H₂SO₄ and 1,3,5-trioxane was 1:7.5.The reaction temperature was 75℃.The reaction time was 3h; the yield of TRAT was 94%. H₂SO₄ was used as catalyst. Acetonitrile were reactant and solvent. At room temperature, the ratio of TRAT and N₂O₅ was 1:6.The ratio of N₂O₅ and HNO₃ was 1:7,the reaction temperature was 50℃, the reaction time was 1h.The yield of RDX was 84%. All the parts were given by molar ratio.The structures of the synthetic products were characterized by Infrared Spectroscopy (IR), Mass Spectra (MS) and ¹H Nuclear Magnetic Resonance (¹HNMR). The results proved that the structures and performance indexes of the products conformed to the design requirement and the synthesize way was novel and practical.