An X-ray diffraction study on the structure of the supersaturated MgSO4 solutions
文献类型：期刊论文
| 作者 | Fang, CH; Fang, Y; Guo, YM; Yang, B; Lei, YC |
| 刊名 | ACTA CHIMICA SINICA
 |
| 出版日期 | 2004-02-14 |
| 卷号 | 62期号:3页码:268-273 |
| 关键词 | Liquid Structure Supersaturated Solution Mgso4 X-ray Diffraction |
| 文献子类 | Article |
| 英文摘要 | The hydration structure of the supersaturated MgSO4 solutions has been investigated by means of X-ray diffraction at 298 K. An empirical golden rule, r = 0.618lambda/sin theta, has been used to extract some structural information from the experimental diffraction curve, and the other, r = 0.618 x 4pi/s, to expound some peaks on the structural function curve. The calculation of the structural model shows there exist the water-shared ion-pair and the contact ion-pair in the supersaturated solutions. The characteristic Mg-S distance of the contact ion-pair has been determined to be about 0.328 nm. It shows that the contact ion-pair MgSO40 is a unidentate complex. The Mg-O-S(1) distance between magnesium ion and the nearest oxygen atom in sulfate ion has been measured to be 0.205 nm and is equivalent to that of Mg-H2O. The Mg-Os (2) distance is close to that of Mg-Os (3), about 0.355 nm. The Mg-O-S(4) distance is situated at about 0.456 nm. The number of ion-pairs obviously increases with the increasing of concentration. The marked Mg-S distance of the water-shared ion-pair coexisting with the contact ion-pair was refined to be 0.492 nm. The symmetry of the hydration structure of sulfate ion is lowered by complex formation of magnesium ion with sulfate anion. |
| WOS关键词 | COMPTON SCATTERING FACTORS ; AQUEOUS-SOLUTIONS ; CRYSTAL STRUCTURE ; MOLECULAR-DYNAMICS ; ION HYDRATION ; FREE ATOMS ; AB-INITIO ; SULFATE ; CHEMISTRY ; NICKEL |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000188877700008 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/6120]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 中国科学院青海盐湖研究所 |
| 作者单位 | Chinese Acad Sci, Inst Salt Lake, Xining 810008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, CH,Fang, Y,Guo, YM,et al. An X-ray diffraction study on the structure of the supersaturated MgSO4 solutions[J]. ACTA CHIMICA SINICA,2004,62(3):268-273. |
| APA | Fang, CH,Fang, Y,Guo, YM,Yang, B,&Lei, YC.(2004).An X-ray diffraction study on the structure of the supersaturated MgSO4 solutions.ACTA CHIMICA SINICA,62(3),268-273. |
| MLA | Fang, CH,et al."An X-ray diffraction study on the structure of the supersaturated MgSO4 solutions".ACTA CHIMICA SINICA 62.3(2004):268-273. |
入库方式： OAI收割
来源：青海盐湖研究所
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