Pyrohydrolysis of SmF3 in moist air
文献类型：期刊论文
| 作者 | Peng, J; Zheng, XB; Qiu, TT; Gao, SZ; Liu, YX; Zhang, L |
| 刊名 | JOURNAL OF FLUORINE CHEMISTRY
 |
| 出版日期 | 2017 |
| 卷号 | 193页码:106-112 |
| 关键词 | Smf3 Pyrohydrolysis Thermogravimetry Reaction Mechanism Kinetics |
| ISSN号 | 0022-1139 |
| DOI | 10.1016/j.jfluchem.2016.11.011 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In order to prove the feasibility of pyrohydrolysis method of fluorides in TMSR spent fuel reprocessing, pyrohydrolysis behavior and reaction mechanism of neutron poison represented by SmF3 in moist air, have been studied by means of thermogravimetric analysis (TG). Then, reaction products in solid state Were characterized by means of XRD and SEM. The results indicated that SmF3 began to hydrolyze in 773 K. Two definite breaks on TG curves were correlated to the conversions of SmF3 into SmOF and SmOF into Sm2O3, respectively. Through the simulation calculation, we found that the two stages of the reaction can both meet the second-order reaction kinetics, and their corresponding activation energies are 60.2 and 31.2 kJ/mol, respectively. From the results of dynamics simulation, the rate equation obeyed the phase boundary rate law, which was expressed by [1 - (1 - x)(1/3)] = kt. Further studies indicated that the rate-determining step was the surface reaction control, and the shrinking core model was applied to describe the mechanism. These results showed that pyrohydrolysis method of fluorides could be used for fuel reprocessing due to its unique reaction mechanism. (C) 2016 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000392044400015 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27424]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Peng, J,Zheng, XB,Qiu, TT,et al. Pyrohydrolysis of SmF3 in moist air[J]. JOURNAL OF FLUORINE CHEMISTRY,2017,193:106-112. |
| APA | Peng, J,Zheng, XB,Qiu, TT,Gao, SZ,Liu, YX,&Zhang, L.(2017).Pyrohydrolysis of SmF3 in moist air.JOURNAL OF FLUORINE CHEMISTRY,193,106-112. |
| MLA | Peng, J,et al."Pyrohydrolysis of SmF3 in moist air".JOURNAL OF FLUORINE CHEMISTRY 193(2017):106-112. |
入库方式： OAI收割
来源：上海应用物理研究所
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