Method for synthesizing TNAD through catalytic nitration by using ionic liquid

Abstract

The invention discloses a method for synthesizing TNAD (trans-1,4,5,8-tetranitro-1,4,5,8-tetraazadecalin) through catalytic nitration by using an ionic liquid. According to the method, N2O5 is taken as a nitration agent, an inertia organic liquid is taken as a solvent, the ionic liquid is taken as a catalyst, and decahydro-pyrazino[2,3-b]pyrazine is directly nitrated, so that high-purity TNAD is prepared. Compared with the prior art, the method has the advantages of mild reaction conditions, operation easiness, high purity, good safety, low cost and the like.

Description

technical field [0001] The invention relates to a method for preparing explosives, in particular to a method for synthesizing TNAD by using dinitrogen pentoxide as a nitrating agent and catalyzing an ionic liquid. Background technique [0002] Nitrogen heterocyclic compounds play an important role in the field of energetic materials. The synthesis of nitrogen heterocyclic ammonium nitrate provides new materials for the development of new nitrogen heterocyclic explosives, plasticizers and energetic additives. As a component of mixed explosives and propellants, tetranitrodipiperazine (TNAD) is an ideal new material, its energy is equivalent to RDX, and its stability is better than RDX. As a component of composite propellants, it is not Crystallization will occur, which can effectively improve the performance of the ammonium nitrate propellant. Therefore, the synthesis of tetranitrodipiperazine has attracted the attention of foreign scholars. [0003] In the early 1980s, Wil...

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Problems solved by technology

Although this method has only one-step reaction, it consumes a large amount of acetic anhydride, which increases the production cost, and the reaction temperature is relatively high, which has potential safety hazards

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