CAS OpenIR  > 中科院上海应用物理研究所2011-2020年
Study on the fluorination reaction of uranium tetrafluoride by nitrogen trifluoride
Niu, YS; Sun, LX; Hu, CW; Zhou, JH; Dou, Q; Li, QN
2020
Source PublicationJOURNAL OF FLUORINE CHEMISTRY
ISSN0022-1139
Volume230Pages:-
Subtype期刊论文
AbstractThe fluorination of UF4 by NF3 at different temperatures was investigated using in-line Fourier transform infrared (FTIR) spectroscopy. The results indicated that the fluorination between NF3 and UF4 occurred only when the temperature was above 723 K, and the temperature had a significant effect on the average reaction rate and the utilization rate of NF3. The in-line FTIR spectrum analysis and thermodynamic calculation indicated that UF4 was converted to UF6 with the following reaction mechanism: 2/3NF(3)(g) + UF4(s) = UF6(g) + 1/3N(2)(g). The conversion rate of UF4 to UF6 increased from 1.53 to 2.68 gUh-(1) and the utilization rate of NF3 increased from 10.5%-22.5 % when the reaction temperature increased from 723 K to 873 K. The calculated rate constant increased from 1.6 x 10(-2) to 3.1 x 10(-2) min(-1) in the range of 723 K to 873 K, and the activation energy of the reaction was 22.56 kJ/mol.
KeywordRAMAN-SPECTRA THERMAL NF3 FLUORIDES KINETICS
DOI10.1016/j.jfluchem.2019.109436
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/33168
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
2.Chinese Acad Sci, Ctr Excellence TMSR Energy Syst, Shanghai 201800, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Niu, YS,Sun, LX,Hu, CW,et al. Study on the fluorination reaction of uranium tetrafluoride by nitrogen trifluoride[J]. JOURNAL OF FLUORINE CHEMISTRY,2020,230:-.
APA Niu, YS,Sun, LX,Hu, CW,Zhou, JH,Dou, Q,&Li, QN.(2020).Study on the fluorination reaction of uranium tetrafluoride by nitrogen trifluoride.JOURNAL OF FLUORINE CHEMISTRY,230,-.
MLA Niu, YS,et al."Study on the fluorination reaction of uranium tetrafluoride by nitrogen trifluoride".JOURNAL OF FLUORINE CHEMISTRY 230(2020):-.
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