铀酰离子的水解聚合行为研究
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- 英文论文题名：Hydrolysis and polymerization behaviours of uranyl ion
- 论文作者：武红英 ; 李英秋 ; 王少飞
- 英文论文作者：WU Hong-ying ; LI Ying-qiu ; WANG Sao-fei ; China Academy of Engineering Physics
- 年：2015
- 作者机构：中国工程物理研究院;
- 论文关键词：铀酰离子 ; 水解聚合
- 英文论文关键词：uranyl ion ; Hydrolysis and polymerization
- 会议召开时间：2015-09-21
- 会议录名称：中国核科学技术进展报告（第四卷）——中国核学会2015年学术年会论文集第6册（核化学与放射化学分卷、核化工分卷）
- 语种：中文
- 分类号：O645.11
- 学会代码：EGVD
- 会议名称：中国核学会2015年学术年会
- 会议地点：中国四川绵阳
- 主办单位：中国核学会
- 学会名称：中国核学会
- 页数：5
- 文件大小：223k
- 原文格式：O
- 会议级别：全国
摘要
通过对两种不同浓度铀酰离子pH滴定曲线实验研究,初步探讨了铀酰离子在水解单核物区、低/中聚合物区、高聚合物和胶体区、沉淀区可能存在的形态,为研究铀酰离子水解聚合形态转化机理提供了一种新思路;通过对不同pH下铀酰离子的紫外可见吸收光谱分析,其吸收光谱的峰形在各个峰位变化不大,未发现有新的特征吸收峰,这与早期学者所得出的结论一致。
Through the acid-base titration of uranyl under two different concentrations,we have preliminarily investigated the possible species of uranyl in different zone,such as mononuclear,low/middle/high polymer,colloid,and precipitation,which can provide a new research approach concerning the transformation mechanism of uranyl between hydrolysis and polymerization.With the UV-Visible absorption spectra of uranyl at different pH,it was found that the shape of major absorption peaks varied little and no new characteristic absorption peak was appeared,which was coincident with the results obtained from the early researchers.
Through the acid-base titration of uranyl under two different concentrations,we have preliminarily investigated the possible species of uranyl in different zone,such as mononuclear,low/middle/high polymer,colloid,and precipitation,which can provide a new research approach concerning the transformation mechanism of uranyl between hydrolysis and polymerization.With the UV-Visible absorption spectra of uranyl at different pH,it was found that the shape of major absorption peaks varied little and no new characteristic absorption peak was appeared,which was coincident with the results obtained from the early researchers.
引文
[1]Cordfunke E H P.The chemistry of uranium:Including its applications in nuclear technology[M].1969.中译本,《核材料》编辑部《铀化学》翻译组译.北京:原子能出版社,1969.
[2]#12
[3]董灵英.铀的分析化学[M].北京:原子能出版社,1982.
[4]Fujji T,Fujiwara K,Yamana H,et al.Raman spectroscopic determination of formation constant of uranyl hydrolysis species(UO_2)_2(OH)_2~(2+)[J].Journal of Alloys and Compounds,2001,323-324:859-863.
[5]Reilly S D,Neu M P.Pu(Ⅵ)hydrolysis:Further evidence for a dimeric plutonyl hydroxide and contrasts with U(Ⅵ)chemistry[J].InOrg Chem,2006,45:1839-1846.
[6]Buhl M,Schreckenbach G.Oxygen exchange in uranyl hydroxide via two"Nonclassical"ions[J].Inorg Chem,2010,49:3821-3827.
[7]Shamov G A,Schreckenbach G.Theoretical study of the oxygen exchange in uranyl hydroxide,an old riddle solved?[J].J AmChemSoc,2008,130(41):13735-13744.
[8]Mashirov L G,Mikhalev V A,Suglobov D N.Stoichiometry of uranyl hydrolysis reaction in acidic aqueous solutions from the evidence of oxygen exchange kinetics[J].C R Chimie,2004,7:1179-1184.
[9]Tsushime S,Reich T.A theoretical study of uranyl hydroxide monomeric and dimeric complexs[J].Chemical Physics Letters,2001,347:127-132.
[2]#12
[3]董灵英.铀的分析化学[M].北京:原子能出版社,1982.
[4]Fujji T,Fujiwara K,Yamana H,et al.Raman spectroscopic determination of formation constant of uranyl hydrolysis species(UO_2)_2(OH)_2~(2+)[J].Journal of Alloys and Compounds,2001,323-324:859-863.
[5]Reilly S D,Neu M P.Pu(Ⅵ)hydrolysis:Further evidence for a dimeric plutonyl hydroxide and contrasts with U(Ⅵ)chemistry[J].InOrg Chem,2006,45:1839-1846.
[6]Buhl M,Schreckenbach G.Oxygen exchange in uranyl hydroxide via two"Nonclassical"ions[J].Inorg Chem,2010,49:3821-3827.
[7]Shamov G A,Schreckenbach G.Theoretical study of the oxygen exchange in uranyl hydroxide,an old riddle solved?[J].J AmChemSoc,2008,130(41):13735-13744.
[8]Mashirov L G,Mikhalev V A,Suglobov D N.Stoichiometry of uranyl hydrolysis reaction in acidic aqueous solutions from the evidence of oxygen exchange kinetics[J].C R Chimie,2004,7:1179-1184.
[9]Tsushime S,Reich T.A theoretical study of uranyl hydroxide monomeric and dimeric complexs[J].Chemical Physics Letters,2001,347:127-132.