| 硝酸对硝基苯热稳定性的影响机理 |
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| 引用本文： | 阮继锋,孙金华,郭耸,平平.硝酸对硝基苯热稳定性的影响机理[J].化工学报,2013,0(5):1526-1531. |
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| 作者姓名： | 阮继锋 孙金华 郭耸 平平 |
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| 作者单位： | 1. 中国科学技术大学火灾科学国家重点实验室, 安徽 合肥 230026;
2. 南京理工大学化工学院, 江苏 南京 210094 |
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| 摘 要： | 引言硝基苯是重要的化工产品,主要用作生产苯胺的原料、橡胶硫化促进剂及其他有机合成的中间体1]。在硝基苯的生产、储存、使用等过程中可能由于工艺波动或操作失误等原因混入一些杂质,这些杂质会影响硝基苯的热分解特性,有些还会加速其热分解过程,如果体系放热速度大于向环境的散
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| 关 键 词： | 硝基苯 硝酸 热稳定性 自加速分解温度 反应机理 |
| 收稿时间： | 2012-09-05 |
| 修稿时间： | 2013-01-27 |
Influence mechanism of nitric acid on thermal stability of nitrobenzene |
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| RUAN Jifeng,SUN Jinhua,GUO Song,PING Ping.Influence mechanism of nitric acid on thermal stability of nitrobenzene[J].Journal of Chemical Industry and Engineering(China),2013,0(5):1526-1531. |
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| Authors: | RUAN Jifeng SUN Jinhua GUO Song PING Ping |
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| Affiliation: | 1. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, Anhui, China;
2. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China |
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| Abstract: | The influence of nitric acid on the thermal stability of nitrobenzene was studied.The thermal behavior and chemical thermodynamic parameters of pure nitrobenzene and its mixtures with nitric acid were analyzed by utilizing a CALVET heat flux calorimeter, C80.The kinetic parameters of chemical reaction, such as activation energy, frequency factor and heat of reaction, were calculated based on the experimental data of C80.Based on these parameters and the Semenov thermal explosion theory, the self-accelerating decomposition temperature of samples was calculated and compared.A GCT gas chromatography-time of flight mass spectrography was used to analyze the thermal decomposition of pure nitrobenzene at high temperature.The thermal decomposition mechanism of nitrobenzene and its mixture with nitric acid was proposed. |
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| Keywords: | nitrobenzene nitric acid thermal stability self-accelerating decomposition temperature reaction mechanism |
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