In-situ Raman spectral investigation into hydrogen bonding characteristics of supercritical water

Journal of Molecular Liquids(2022)

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摘要
•A visual platform that combined Raman spectrometer was built to observe water at temperatures from 293 K to 1013 K.•The extent of hydrogen bonding in liquid water and supercritical water were estimated.•Compared with temperature, density has a greater effect on the degree of hydrogen bonding in supercritical water.•Hydrogen bonds still exist in supercritical water even at temperature of 1013 K (ρ = 49.8 g/L).
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关键词
Supercritical water,Raman spectroscopy,Hydrogen bonding
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