Synthesis of RDX by Nitrolysis of Hexamethylenetetramine in the Presence of Br(o)sted Acidic Ionic Liquids

摘要

The experimental study was carried out on the direct nitrolysis of Hexamethylenetetramine (HA) to synthesize hexahydro-1, 3, 5-trinitro 1, 3, 5- triazine (RDX) with nitric acid (95%) catalyzed by Br鴑sted acidic ionic liquids. The effects of various parameters, such as amount of ionic liquid, mass ratio of nitric acid (95%), and various ionic liquids, such as [HMim]X, [(CH2)4SO3HMim]X, and [(CH2)4SO3HPyr]X (X-=pTSO-, NO3 -, CF3COO-), and reaction time were investigated. [(CH2)4SO3HPyr]NO3 ionic liquid showed good catalytic activities in the nitrolysis reaction of HA. Compared with the system without ionic liquid, the yield of RDX was improved by 10.5% in the presence of 3.0% mol ratio [(CH2)4SO3HPyr]NO3 ionic liquid to HA.