Structure of aqueous sodium sulfate solutions derived from X-ray diffraction
文献类型：期刊论文
| 作者 | Xu JiXiang1,2; Fang Yan1 ; Fang ChunHui1
|
| 刊名 | CHINESE SCIENCE BULLETIN
 |
| 出版日期 | 2009-06-01 |
| 卷号 | 54期号:12页码:2022-2027 |
| 关键词 | Solution Structure Sodium Sulfate Radial Distribution Function Contact Ion Pairs X-ray Diffraction |
| 文献子类 | Article |
| 英文摘要 | A rapid liquid X-ray diffractometer was used to study the time-averaged and space-averaged structure of aqueous sodium sulfate solutions at 298 and 323 K. Difference radial distribution functions of the solutions were obtained from accurate diffraction data. The interaction distances of Na(+)-OH(2) and S-H(2)O in solutions were found to be 0.235 and 0.385 nm, respectively, after deconvolution of superposition peaks by Gaussian multi-peak fitting program. The characteristic distance of the NaSO (4) (-) contact ion pairs in higher concentration solutions was determined to be 0.345 nm, suggesting that the Na(+) ions coordinated with SO (4) (2-) ions in the mono-dentate form. Effects of concentration and temperature on the hydration structure of the solutions were discussed in the present paper. With a decrease in concentration, the contributions of the H(2)O to the diffraction pattern increase, the average coordination number of the Na(+) ions hardly changes, while the hydration number of SO (4) (2-) ions increases slightly. The formation of NaSO (4) (-) contact ion pairs becomes easier at higher temperature. The structure of hydrogen bond in dilute solutions is broken to a considerable extent with rising temperature, and the peak at 0.290 nm splits into two peaks at 0.275 and 0.305 nm, respectively. |
| WOS关键词 | AB-INITIO ; WATER ; ION ; SIMULATION ; HYDRATION ; DYNAMICS ; NA+ ; SCATTERING ; SOLVATION ; SALT |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000267145500007 |
| 源URL | [http://ir.isl.ac.cn/handle/363002/5902]  |
| 专题 | 青海盐湖研究所_青海盐湖研究所知识仓储 青海盐湖研究所_盐湖资源与化学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu JiXiang,Fang Yan,Fang ChunHui. Structure of aqueous sodium sulfate solutions derived from X-ray diffraction[J]. CHINESE SCIENCE BULLETIN,2009,54(12):2022-2027. |
| APA | Xu JiXiang,Fang Yan,&Fang ChunHui.(2009).Structure of aqueous sodium sulfate solutions derived from X-ray diffraction.CHINESE SCIENCE BULLETIN,54(12),2022-2027. |
| MLA | Xu JiXiang,et al."Structure of aqueous sodium sulfate solutions derived from X-ray diffraction".CHINESE SCIENCE BULLETIN 54.12(2009):2022-2027. |
入库方式： OAI收割
来源：青海盐湖研究所
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