Structure Study of Supercritical CO2 near Higher-Order Phase Transition Line by X-ray Diffraction

Autor:	Seiya Furutaka, Takeshi Morita, Hanae Iida, Masakazu Takematsu, Keiko Nishikawa
Rok vydání:	1997
Předmět:	Phase transition Materials science Scattering Critical point (thermodynamics) X-ray crystallography Materials Chemistry Radial distribution Physical and Theoretical Chemistry Molecular physics Supercritical fluid Surfaces Coatings and Films Electron backscatter diffraction
Zdroj:	The Journal of Physical Chemistry B. 101:7158-7162
ISSN:	1520-5207 1520-6106
DOI:	10.1021/jp9710906
Popis:	Wide-angle X-ray scattering experiments for supercritical CO2 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.
Databáze:	OpenAIRE
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