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Density and temperature dependence of proton diffusion in water: A first-principles molecular dynamics study
被引:48
|作者:
Boero, M
Ikeshoji, T
Terakura, K
机构:
[1] Univ Tsukuba, Inst Phys, Ibaraki 3058571, Japan
[2] Natl Inst Adv Ind Sci & technol, Res Inst Computat Sci, Tsukuba, Ibaraki 3058568, Japan
[3] Hokkaido Univ, Div Frontier Res, Sapporo, Hokkaido 0010021, Japan
来源:
关键词:
ab inito calculations;
hydrogen bonds;
molecular dynamics;
proton diffusion;
supercritical fluids;
D O I:
10.1002/cphc.200400572
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
(Figure Presented) New insights into proton propagation: The authors present a detailed report on the diffusion of a proton in different thermodynamic states of water. At high temperature and intermediate density, the proton - which spends more time as an Eigen complex than as a Zundel complex (see figure) - is destabilized, its migration is faster, and an incomplete Eigen complex acts as an acid with high chemical reactivity. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.
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页码:1775 / 1779
页数:5
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