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8249041 
Journal Article 
正己烷与正十二烷在硝酸体系中的化学行为 
Zhou, CL; Wang, M; Tang, HB; Li, XY; Yu, T; Tang, SL 
2021 
Science Press 
43 
2 
122-128 
Chinese 
The reaction products of n-hexane and n-dodecane linear alkanes in nitric acid system were determined by infrared spectroscopy, gas chromatography-mass spectrum and nuclear magnetic carbon spectrum. The effects of temperature, nitric acid concentration and reaction time on the n-hexane and n-dodecane nitration products were quantitatively analyzed by gas chromatography. The pressure change of n-hexane and n-dodecane with nitric acid at a temperature of 150℃ using a high pressure reactor was investigated. The results show that the reaction products of n-hexane and n-dodecane in the nitric acid system at high temperature are a mixture of nitrohexane isomers(2-nitrohexane and 3-nitrohexane) and a mixture of nitrododecane isomers(2-, 3-, 4-, 5-, 6-nitrododecane). The temperature and nitric acid concentration are the greater factor impacting on degradation products, while the reaction time affects smaller. When the temperature is 150℃, the maximum pressure of n-hexane in the nitric acid system is 3.44 MPa, which is much higher than the pressure of 1.58 MPa of the n-dodecane system. And as the proportion of nitric acid increases, the pressure and the degree of reaction generated by the reaction system increase. © 2021, Editorial Board of Journal of Nuclear and Radiochemistry. All right reserved. 
Linear alkane; Nitric acid; Nitrification product; Spent fuel reprocessing