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含能材料  2013 

3-硝基-1,2,4-三唑-5-酮(NTO)废酸的循环利用

Keywords: 有机化学,3-硝基-1,2,4-三唑-5-酮(NTO),合成,废酸循环利用

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Abstract:

针对3-硝基-1,2,4-三唑-5-酮(NTO)硝化过程中产生大量废酸导致“三废”综合治理成本高的问题,通过向废酸中补加少量工业浓硝酸制成质量分数为70%的硝酸溶液作为硝化剂,硝化1,2,4-三唑-5-酮(TO),循环合成目标化合物NTO。采用红外光谱、核磁共振光谱、元素分析对其进行了结构表征。考察了硝化剂用量、反应时间、反应温度对产品的影响,优化了硝化反应条件,确定硝化的最佳反应条件为:n(TO)n(HNO3)=16,反应温度60~65℃,反应时间1h,纯度可达99.9%。废酸循环利用10次以上,平均收率82%,硝酸用量减少了67.6%。

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