What can positronium tell us about adsorption?

被引：7

作者：

Kierys, Agnieszka ^{[1
]}

Zaleski, Radoslaw ^{[2
]}

Tydda, Maciej ^{[2
]}

Goworek, Jacek ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Adsorpt, PL-20031 Lublin, Poland

[2] Marie Curie Sklodowska Univ, Inst Phys, Dept Nucl Methods, PL-20031 Lublin, Poland

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2013年 / 19卷 / 2-4期

关键词：

Silica gel; Positron annihilation lifetime spectroscopy (PALS); N-heptane adsorption; ANNIHILATION LIFETIME SPECTROSCOPY; POROUS SILICA; SPECTRA; DESORPTION; PORES; GEL;

D O I：

10.1007/s10450-013-9475-x

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：

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

页码：529 / 535

页数：7

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