| RDX热分解的TG-DSC-QMS-FTIR同步动力学 |
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| 引用本文： | 李艳春,闫石,成一.RDX热分解的TG-DSC-QMS-FTIR同步动力学[J].火炸药学报,2009,32(1). |
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| 作者姓名： | 李艳春 闫石 成一 |
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| 作者单位： | 南京理工大学化工学院,江苏,南京,210094 |
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| 摘 要： | 采用TG-DSC-QMS-FTIR同步动力学技术对RDX的热分解过程进行了研究,结果表明,RDX在熔融之后发生分解,可以确定RDX的产物有C、H2O、CH2O、N2O、CO、CO2、NO2,可能有CH4和NH3,而几乎没有NO.采用多元非线性拟合技术进行动力学参数计算,结果表明,RDX的分解过程大致可以分为3个连续步骤,第1步反应的活化能为235 kJ/mol,指前因子log(A/s-1)为22,反应级数为0.6,主要气体产物为CO2、NO2和CH2O;第2步反应的活化能为110 kJ/mol,指前因子log(A/s-1)为1.5,反应级数为1.7,主要的气体产物是N2O、H2O、CH4、NH3、C2O+/C3H+4、CN+/C2H+3、CHO+/C2H+;第3步反应的活化能为223 kJ/mol,指前因子log(A/s-1)为20.9,反应级数为4,主要的产物是C和CO.
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| 关 键 词： | 分析化学 TG-DSC-QMS-FTIR联用技术 热分解动力学 热分解机理 |
Thermal Decomposition Kinetics of RDX by TG-DSC-QMS-FTIR |
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| LI Yan-chun,YAN Shi,CHENG Yi.Thermal Decomposition Kinetics of RDX by TG-DSC-QMS-FTIR[J].Chinese Journal of Explosives & Propellants,2009,32(1). |
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| Authors: | LI Yan-chun YAN Shi CHENG Yi |
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| Affiliation: | LI Yan-chun,YAN Shi,CHENG Yi(School of Chemical Engineering,Nanjing University of Science , Technology,Nanjing 210094,China) |
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| Abstract: | The thermal decomposition process of RDX was investigated by TG-DSC-QMS-FTIR techniques.The result shows that RDX begins to decompose after melting.It is certain that the products have C,H2O,CH2O,N2O,CO,CO2 and NO2,maybe have CH4 and NH3,and have no NO.The kinetic parameters were calculated by non-linear regression.The results show that the decomposition process of RDX can be divided into three successive steps.The first step: activation energy 235kJ/mol,the pre-exponential factor log(A/s-1) 22,reaction ord... |
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| Keywords: | RDX |
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