What can positronium tell us about adsorption?

被引：0
|
作者：
Agnieszka Kierys
Radosław Zaleski
Maciej Tydda
Jacek Goworek
机构：
[1] Maria Curie-Sklodowska University,Department of Adsorption, Faculty of Chemistry
[2] Maria Curie-Sklodowska University,Department of Nuclear Methods, Institute of Physics
来源：
Adsorption | 2013年 / 19卷
关键词：
Silica gel; Positron annihilation lifetime spectroscopy (PALS); -heptane adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The condensation and evaporation of n-heptane at 298 K in mesopores of silica material obtained by the polymer templating method have been studied by PALS measurements. It is demonstrated that the ortho-positronium lifetimes and intensities provide valuable information on pore filling and emptying which are not accessible from a conventional adsorption experiment. The results confirm the specific adsorption mechanism of n-heptane in pores with narrow openings (ink-bottle shape) which is different from that known for other pore geometries. The results from PALS experiment are compared to those derived from the conventional n-heptane and nitrogen adsorption data.
引用
收藏
页码：529 / 535
页数：6
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