HYSTERESIS DURING ISOTHERMAL SCANNING THROUGH THE GAS-LIQUID TRANSITION OF CARBON-DIOXIDE CONFINED IN NANOMETER PORES

被引：10

作者：

WILKINSON, NJ

DUFFY, JA

FRETWELL, HM

ALAM, MA

机构：

[1] H.H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, Tyndall Avenue

来源：

PHYSICS LETTERS A | 1995年 / 204卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0375-9601(95)00475-I

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Scanning hysteresis behaviour at the gas-liquid transition of CO2 confined in pores of average diameter similar to 40 Angstrom has been studied by positronium annihilation spectroscopy. Closer inspection of positron 2 gamma annihilation reveals a significant difference on increasing and decreasing the pressure through the transition, which is explained in terms of a larger liquid-gas interface on pore filling. The results favour the network model as the origin of the observed hysteresis.

引用

页码：285 / 290

页数：6

共 16 条

[1] TEMPERATURE-DEPENDENCE OF GAS-ADSORPTION ON A MESOPOROUS SOLID - CAPILLARY CRITICALITY AND HYSTERESIS [J].