用硝酸法由TADFIW制备HNIW

在82.48%~88.89%硝酸中,将四乙酰基二甲酰基六氮杂异伍兹烷(TADFIW)硝解为γ-六硝基六氮杂异伍兹烷(HNIW),得率88%以上,纯度99.4%以上。该方法最佳硝酸浓度为86.66%,此时HNIW得率94.0%,纯度99.51%。所得HNIW中所含的主要杂质为五硝基一乙酰基六氮杂异伍兹烷(PNMAIW),与TADFIW在硝硫混酸中硝解所得主要杂质五硝基一甲酰基六氮杂异伍兹烷(PNMFIW)不同,说明TADFIW在硝酸中硝解与在硝硫混酸中硝解的反应历程不同。     

四乙酰基ニ甲酰基六氮杂异伍兹烷的硝解杂质与硝解机理

研究四乙酰基二甲酰基六氮杂异伍兹烷在浓硝酸和硝硫混酸介质中的硝解反应，两种介质体系中的主要硝解产物均为六硝基六氮杂异伍兹烷。采用柱色谱分离从两种硝解产物中得到了两种完全不同的杂质：前者为五硝基一乙酰基六氮杂异伍兹烷；后者为五硝基一甲酰基六氮杂异伍兹烷。硝解产物中存在不同杂质说明，四乙酰基二甲酰基六氮杂异伍兹烷在两种不同的硝解剂中发生的硝解反应遵循不同的硝解机理。     

Computational studies on the structure and detonation properties of nitro-substituted triazole-furazan derivatives

Some nitro-substituted triazole-furazan derivatives are considered as potential candidates for high energy density compounds through quantum chemical treatment. Their geometric and electronic structures, band gap, thermodynamic properties and detonation properties were studied using the density functional theory at the B3LYP/6-311+G^** level. The calculated energy of explosion, density, and detonation properties of model compounds were comparable to 1,3,5-trinitro-1,3,5-triazinane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX). The heats of formation and bond dissociation energy were also analysed to understand the nature of thermal stabilities and the trigger bond in the pyrolysis process.     

二水合5,5'-联四唑-1,1'-二羟基的纯度分析方法

建立了二水合5,5'-联四唑-1,1'-二羟基(BTO)纯度的高效液相色谱分析条件:反相色谱柱(Sino Chrom ODS-BP,4.6 mm×200 mm,5μm),检测波长213 nm,二元流动相乙腈-水30/70(V/V),流速1.0 m L·min-1,柱温25℃。采用外标法对BTO标准溶液进行定量测定,BTO浓度(c)在0.12~0.60 mg·m L-1范围内与色谱峰峰高(h)呈良好的线性关系,线性方程为h=573.78c-1.18,线性相关系数为0.9998。该法的相对标准偏差为0.48%~1.00%,平均回收率为98.10%~100.64%,方法灵敏、准确,可用于BTO产品的纯度分析。