Structure study of supercritical CO2 near higher-order phase transition line by x-ray diffraction

被引:43
作者
Morita, T
Nishikawa, K
Takematsu, M
Iida, H
Furutaka, S
机构
[1] CHIBA UNIV,GRAD SCH SCI & TECHNOL,DEPT DIVERS SCI,INAGE KU,CHIBA 263,JAPAN
[2] YOKOHAMA NATL UNIV,FAC ENGN,DEPT CHEM,HODOGAYA KU,YOKOHAMA,KANAGAWA 240,JAPAN
来源
JOURNAL OF PHYSICAL CHEMISTRY B | 1997年 / 101卷 / 36期
关键词
D O I
10.1021/jp9710906
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
Wide-angle X-ray scattering experiments for supercritical CO:! near the higher-order phase transition line on the isotherm at T = 308 K were carried out. Radial distribution functions were compared with that of the high-pressure liquid CO2. The results show that the higher-order phase transition line divides supercritical state into two phases, i.e., liquidlike and gaslike regions, from the viewpoint of the structure. Radial distribution functions, however, indicate that this phase transition is remarkably gentle even near the critical point.
引用
收藏
页码:7158 / 7162
页数:5
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