The thermal decomposition of ammonium 3-nitro-1,2,4-triazol-5-onate monohydrate[NH4（NTO）·H2O] was studied by means of thermal analysis-MS coupling and the combination technique of in situ thermolysis cell with ...The thermal decomposition of ammonium 3-nitro-1,2,4-triazol-5-onate monohydrate[NH4（NTO）·H2O] was studied by means of thermal analysis-MS coupling and the combination technique of in situ thermolysis cell with rapid-scan Fourier transform infrared spectroscopy. The results show that there are two endothermic steps and one exothermic step in the decomposition process of NH4（NTO）·H2O. The detected gas products consist of NH3, H2O, N2, CO2, CO, and NO2.展开更多
运用热重-差热-红外-质谱联用(TG-DSC-IR-MS)技术研究了酚醛泡沫(PF)在空气气氛下的热解特性。结果表明:PF在空气气氛中的热解主要分为两个阶段。第一阶段失重率较小,主要为H_2O、HCHO等小分子气体的物理性逸出;在第二阶段,PF首先与空...运用热重-差热-红外-质谱联用(TG-DSC-IR-MS)技术研究了酚醛泡沫(PF)在空气气氛下的热解特性。结果表明:PF在空气气氛中的热解主要分为两个阶段。第一阶段失重率较小,主要为H_2O、HCHO等小分子气体的物理性逸出;在第二阶段,PF首先与空气中的氧反应,逐渐生成炭化层,并出现小幅增重,同时生成H_2O、CO_2、CO、C_2H_4、C、HCHO以及C_2H_5OH等物质,之后PF发生较为剧烈的热分解,大量生成CO_2、CO、C_2H_4等物质(PF的失重主要集中在这一阶段,并且失重速率在506.3℃达到最快)。另外,运用Ozawa-Flynn-Wall法得到分解活化能与转化率的关系曲线,并由之计算出PF在空气气氛中的平均分解活化能为8.56 k J/mol。展开更多
文摘The thermal decomposition of ammonium 3-nitro-1,2,4-triazol-5-onate monohydrate[NH4（NTO）·H2O] was studied by means of thermal analysis-MS coupling and the combination technique of in situ thermolysis cell with rapid-scan Fourier transform infrared spectroscopy. The results show that there are two endothermic steps and one exothermic step in the decomposition process of NH4（NTO）·H2O. The detected gas products consist of NH3, H2O, N2, CO2, CO, and NO2.
文摘运用热重-差热-红外-质谱联用(TG-DSC-IR-MS)技术研究了酚醛泡沫(PF)在空气气氛下的热解特性。结果表明:PF在空气气氛中的热解主要分为两个阶段。第一阶段失重率较小,主要为H_2O、HCHO等小分子气体的物理性逸出;在第二阶段,PF首先与空气中的氧反应,逐渐生成炭化层,并出现小幅增重,同时生成H_2O、CO_2、CO、C_2H_4、C、HCHO以及C_2H_5OH等物质,之后PF发生较为剧烈的热分解,大量生成CO_2、CO、C_2H_4等物质(PF的失重主要集中在这一阶段,并且失重速率在506.3℃达到最快)。另外,运用Ozawa-Flynn-Wall法得到分解活化能与转化率的关系曲线,并由之计算出PF在空气气氛中的平均分解活化能为8.56 k J/mol。
