STRUCTURAL STUDY OF SUPERCRITICAL CARBON-DIOXIDE BY NEUTRON-DIFFRACTION

被引：27

作者：

ISHII, R

OKAZAKI, S

ODAWARA, O

OKADA, I

MISAWA, M

FUKUNAGA, T

机构：

[1] NIIGATA UNIV,FAC SCI,DEPT CHEM,NIIGATA 95021,JAPAN

[2] NAGOYA UNIV,DEPT CRYSTALLINE MAT SCI,CHIKUSA KU,NAGOYA,AICHI 464,JAPAN

来源：

FLUID PHASE EQUILIBRIA | 1995年 / 104卷

基金：

日本学术振兴会;

关键词：

EXPERIMENTS; DATA; SUPERCRITICAL FLUID; CARBON DIOXIDE; STRUCTURE; NEUTRON DIFFRACTION;

D O I：

10.1016/0378-3812(94)02655-K

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Structure of supercritical carbon dioxide at 320 K and at 9.2 MPa, 9.7 MPa and 10.2 MPa has been studied by neutron diffraction. For comparison, the gaseous state at 293 K and 1.0 MPa has also been studied. The intramolecular structure is practically independent of the state, that is, gaseous, liquid, solid or supercritical state. The structure factor shows a large increase in the small angle region (approximate to 0.3 Angstrom(-1)). This feature is in contrast to that previously found for the supercritical state far from the critical point by neutron diffraction by Bausenwein et al. (1992). The present diffraction result substantiates that the fluctuation of the densities is large in the region investigated

引用

页码：291 / 304

页数：14

共 9 条

[1] 1ST DIRECT OBSERVATION OF ORIENTATIONALLY CORRELATED MOLECULES IN CO2(I) BY NEUTRON-DIFFRACTION [J].