Local density augmentation of supercritical water probed by 4,4 '-bpyH(center dot) radical: A pulse radiolysis study
Liu, Z; Fang, Z; Muroya, Y; Fu, HY; Yan, Y; Katsumura, Y; Lin, MZ; Lin, MZ (reprint author), Univ Sci & Technol China, Sch Nucl Sci & Technol, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China.
2016
发表期刊CHEMICAL PHYSICS LETTERS
ISSN0009-2614
卷号657页码:78-82
文章类型期刊论文
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.
关键词Supercritical Water Pulse Radiolysis Radical Local Density Solute-solvent Interaction
DOI10.1016/j.cplett.2016.05.059
收录类别SCI
语种英语
WOS记录号WOS:000383444700014
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26562
专题中科院上海应用物理研究所2011-2018年
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.
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GB/T 7714
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,2016,657:78-82.
APA Liu, Z.,Fang, Z.,Muroya, Y.,Fu, HY.,Yan, Y.,...&Lin, MZ .(2016).Local density augmentation of supercritical water probed by 4,4 '-bpyH(center dot) radical: A pulse radiolysis study.CHEMICAL PHYSICS LETTERS,657,78-82.
MLA Liu, Z,et al."Local density augmentation of supercritical water probed by 4,4 '-bpyH(center dot) radical: A pulse radiolysis study".CHEMICAL PHYSICS LETTERS 657(2016):78-82.
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