AIL-N2O5-HNO3体系中硝解DADN制备HMX

摘要

Study on the nitrolysis of DADN to HMX was carried out in N2O5-HNO3 system under the catalysis of a-cidic ionic liquid (AIL). The effects of various parameters, such as dosage of the AIL, the molar ratio of materials, reaction time, reaction temperature and AIL type on the nitrolysis were investigated. The results showed that [Et3NH]TsO was the best catalyst among 21 AIL used. The purity of HMX obtained was 99%. HMX could be a-chieved in a higher yield of up to 95. 6%. AIL could be efficiently recovered by simple extraction without any apparent loss of catalytic activity even after five runs.%在酸性离子液体(AIL)催化下利用N2Os硝解DADN制备了HMX.考察了离子液体用量、反应时间、物料配比、不同离子液体对硝解反应的影响,在优化条件下进行了对比试验.结果表明,在所用的21种AIL中,[Et3NH]TsO具有最好的催化效果,HMX的纯度为99％,收率可达到95.6％,离子液体可以通过简单的萃取后回收使用5次,催化效果没有明显的降低.