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题名:
Local density augmentation of supercritical water probed by 4,4 '-bpyH(center dot) radical: A pulse radiolysis study
作者: Liu, Z; Fang, Z; Muroya, Y; Fu, HY; Yan, Y; Katsumura, Y; Lin, MZ
刊名: CHEMICAL PHYSICS LETTERS
出版日期: 2016
卷号: 657, 页码:78-82
关键词: Supercritical water ; Pulse radiolysis ; Radical ; Local density ; Solute-solvent interaction
DOI: 10.1016/j.cplett.2016.05.059
通讯作者: Lin, MZ (reprint author), Univ Sci & Technol China, Sch Nucl Sci & Technol, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China.
文章类型: 期刊论文
英文摘要: Solvatochromic shift of 4,4 '-bpyH(center dot) in aqueous solutions at elevated temperatures up to supercritical conditions and in various organic solvents with different dielectric constants, is investigated by pulse-radiolysis technique. 4,4 '-bpyH(center dot) shows a stronger solvent-solute interaction in water than in organic solvents, perhaps due to the hydrogen bond between 4,4 '-bpyH(center dot) and water. At 380 degrees C, local density augmentation, namely rho(local)-rho(bulk), in supercritical water becomes 280 kg m (3) (rho(bulk) = 208 kg m (3)), and the density enhancement factor is 8.9. Density fluctuation maximizes when rho(bulk) is around 120 kg m (3). Density inhomogeneity decreases as temperature rises, but is still remarkable at 400 degrees C. (C) 2016 Elsevier B. V. All rights reserved.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000383444700014
ISSN号: 0009-2614
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26562
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Liu, Z,Fang, Z,Muroya, Y,et al. Local density augmentation of supercritical water probed by 4,4 '-bpyH(center dot) radical: A pulse radiolysis study[J]. CHEMICAL PHYSICS LETTERS,2016-01-01,657:78-82.
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