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

共 28 条

[21] Measurement and analysis of the positron annihilation lifetime spectra for mesoporous silica [J].

Zaleski, R. .

ACTA PHYSICA POLONICA A, 2006, 110 (05) :729-738

[22] Positron probing of the micellar template interior in MCM-41 [J].

Zaleski, R ;

Borówka, A ;

Wawryszczuk, J ;

Goworek, J ;

Goworek, T .

CHEMICAL PHYSICS LETTERS, 2003, 372 (5-6) :794-799

[23] Positron annihilation and N2 adsorption for nanopore determination in silica-polymer composites [J].

Zaleski, Radoslaw ;

Kierys, Agnieszka ;

Dziadosz, Marek ;

Goworek, Jacek ;

Halasz, Istvan .

RSC ADVANCES, 2012, 2 (09) :3729-3734

[24] n-Heptane adsorption and desorption on porous silica observed by positron annihilation lifetime spectroscopy [J].

Zaleski, Radoslaw ;

Dolecki, Waldemar ;

Kierys, Agnieszka ;

Goworek, Jacek .

MICROPOROUS AND MESOPOROUS MATERIALS, 2012, 154 :142-147

[25] Synthesis and characterization of nanostructural polymer-silica composite: Positron annihilation lifetime spectroscopy study [J].

Zaleski, Radoslaw ;

Kierys, Agnieszka ;

Grochowicz, Marta ;

Dziadosz, Marek ;

Goworek, Jacek .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2011, 358 (01) :268-276

[26] Positronium in solid phases of methanol [J].

Zgardzinska, B. ;

Goworek, T. .

CHEMICAL PHYSICS LETTERS, 2010, 501 (1-3) :44-46

[27] Positronium in alkanes. From neat nonadecane to wax [J].

Zgardzinska, Bozena ;

Goworek, Tomasz .

CHEMICAL PHYSICS LETTERS, 2012, 547 :35-37

[28] Positronium bubble in liquid alkanes and alcohols [J].

Zgardzinska, Bozena ;

Goworek, Tomasz .

CHEMICAL PHYSICS, 2012, 405 :32-39

← 1 2 3 →