硝酸铁对高温高浓度硝酸铵水溶液热稳定性的影响  

Influence of Ferric Nitrate on Decomposition of Ammonium Nitrate Solution with High Temperature and Concentration

作　　者：颜事龙[1] 胡洋勇[1,2] 刘锋[1] 郭子如[1] 康磊[1] 

机构地区：[1]安徽理工大学化学工程学院 [2]96512部队

出　　处：《含能材料》2015年第5期459-463,共5页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(51134012);工业和信息化部安全生产司高温高浓度硝酸铵液体安全性研究专项安(科)-2013-04

摘　　要：为研究水和硝酸铁(Fe(NO3)3)对硝酸铵(NH4NO3)的危险性,利用C80微量热仪模拟密闭环境,对浓度为100%、95%、90%的NH4NO3溶液,以及含有1%、2%、3%、4%四种不同Fe(NO3)3杂质含量的95%NH4NO3溶液进行热分析。结果表明:随着NH4NO3浓度的增加,NH4NO3溶液的活化能下降,热分解的难度降低。水抑制了NH4NO3的热分解,提高了其自反应起始温度(Tonset)。95%NH4NO3Tonset为238.89℃,加入Fe(NO3)3之后Tonset下降,Fe(NO3)3含量2%时Tonset为201.13℃,下降了37.76℃,Fe(NO3)3对95%NH4NO3溶液中NH4NO3热分解有"催化作用"。To explore the effects of the H2O and Fe（NO3）3 on the thermal stablility of NH4NO3,thermal analysis for different concentrations of NH4NO3（100%, 95%, 90%） solution and 95% NH4NO3 solution with different content of Fe（NO3）3 （1%, 2%, 3%, 4%）were studied by C80 micro thermal instrument in closed environment. Results show that the NH4NO3 solution activation energy rises with the decrease of the concentration of NH4NO3, and the difficulty degree of the thermal decomposition decrease. H2O depresses the decomposition of NH4NO3, and increase its self-reaction. The onset temperature（Tonset） of 95%NH4NO3 solution is 238.89℃,and with the increase of ferric nitrate, its Tonset decreases. Fe（NO3）3 has a catalysis effects on the thermal decomposition of 95% NH4NO3 solution. Tonset of 95% NH4NO3 with 2% Fe（NO3）3 solution is 201.13 ℃.

关 键 词：硝酸铵(NH4NO3)溶液 C80微量热仪 硝酸铁(Fe(NO3)3) 含水量 热稳定性 

分 类 号：TQ560.1[化学工程—炸药化工]