Heats of adsorption from the Dubinin-Astakhov model applied to the characterization of pillared interlayered clays (PILCs)

被引：2

作者：

Pires, Joao ^{[1
]}

Pinto, Moises L. ^{[1
]}

Guil, Jose M. ^{[2
]}

机构：

[1] Univ Lisbon, Dept Chem & Biochem, P-1699 Lisbon, Portugal

[2] CSIC, Inst Quim Fis Rocasolano, E-28006 Madrid, Spain

来源：

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY | 2011年 / 17卷 / 02期

关键词：

Vapour adsorption; Adsorption heats; Microcalorimetry; Pillared-Clays; PILCs; ACIDITY CHARACTERIZATION; PROBE MOLECULES; CARBONS; TOLUENE; SIZE;

D O I：

10.1007/s10450-010-9283-5

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：

Heats of adsorption of organic molecules are a useful tool for the characterization of porosity and surface chemistry of microporous materials. This work describes the possibility of using heats of adsorption of organic molecules, estimated from a methodology derived from the Dubinin-Astakhov equation, for the characterization of Pillared Interlayered Clays. The estimated heats were compared with data determined directly by adsorption microcalorimetry. It is shown that the chemical nature of the organic probe molecule strongly conditions the obtained results. The best agreement between calculated and experimental values, amongst the probe molecules studied, was found for toluene.

引用

页码：287 / 292

页数：6

共 23 条

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