PRESSURE VOLUME BEHAVIOR OF 2 CAPILLARY LIQUIDS

被引:4
作者
MACHIN, WD
STUCKLESS, JT
机构
[1] Memorial Univ of Newfoundland, Dep, of Chemistry, St. John's, Newfoundl,, Can, Memorial Univ of Newfoundland, Dep of Chemistry, St. John's, Newfoundl, Can
关键词
EQUATIONS OF STATE - LIQUIDS - Physical Chemistry - SILICA GEL;
D O I
10.1016/0021-9797(85)90234-6
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
Adsorption isotherms for trichlorofluoromethane and carbon tetrachloride on a commercial silica gel are reported. All isotherms are type I and exhibit hysteresis. At relative pressures greater than the lower closure point of the hysteresis loop the adsorbates can be regarded as capillary liquids at negative pressure. The molar volumes of the capillary liquids are greater than those of the corresponding bulk liquids, and the dependence of molar volume on pressure is well represented by an equation of state proposed by R. J. Speedy (J. Phys. Chem. 80, 982, 1982). The compressibilities of the capillary liquids are greater than those of the corresponding bulk liquids.
引用
收藏
页码:46 / 49
页数:4
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