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Title: High-temperature adsorption of n-octane, benzene, and chloroform onto silica gel surface

Abstract

The adsorption properties of silica gel surface for compounds differing in types of intermolecular interactions were studied under conditions in which the same silica was investigated by means of a gas phase titration method, i.e., at high temperature and low surface coverage. Adsorption isotherms of n-octane, benzene, and chloroform were determined at 373, 363, and 353 K. Based on these isotherms the isosteric heat of adsorption was calculated. Moreover, the adsorption energy distribution function and the derivative of film pressure with respect to the adsorbed amount were computed from the isotherms determined at 373 K. The obtained results were compared to those determined by gas phase titration. It was stated that on the dependencies of film pressure derivative some linear sections appeared that corresponded to the inflection points on gas phase titration curves. The results are discussed in terms of both the type and the strength of surface-molecule interactions.

Authors:
Publication Date:
Research Org.:
Maria Curie-Sklodowska Univ., Lublin (PL)
OSTI Identifier:
20075582
Resource Type:
Journal Article
Journal Name:
Journal of Colloid and Interface Science
Additional Journal Information:
Journal Volume: 225; Journal Issue: 1; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-9797
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ADSORPTION; OCTANE; BENZENE; CHLOROFORM; SILICA; GELS; INTERMOLECULAR FORCES

Citation Formats

Bilinski, B. High-temperature adsorption of n-octane, benzene, and chloroform onto silica gel surface. United States: N. p., 2000. Web. doi:10.1006/jcis.1999.6698.
Bilinski, B. High-temperature adsorption of n-octane, benzene, and chloroform onto silica gel surface. United States. doi:10.1006/jcis.1999.6698.
Bilinski, B. Mon . "High-temperature adsorption of n-octane, benzene, and chloroform onto silica gel surface". United States. doi:10.1006/jcis.1999.6698.
@article{osti_20075582,
title = {High-temperature adsorption of n-octane, benzene, and chloroform onto silica gel surface},
author = {Bilinski, B.},
abstractNote = {The adsorption properties of silica gel surface for compounds differing in types of intermolecular interactions were studied under conditions in which the same silica was investigated by means of a gas phase titration method, i.e., at high temperature and low surface coverage. Adsorption isotherms of n-octane, benzene, and chloroform were determined at 373, 363, and 353 K. Based on these isotherms the isosteric heat of adsorption was calculated. Moreover, the adsorption energy distribution function and the derivative of film pressure with respect to the adsorbed amount were computed from the isotherms determined at 373 K. The obtained results were compared to those determined by gas phase titration. It was stated that on the dependencies of film pressure derivative some linear sections appeared that corresponded to the inflection points on gas phase titration curves. The results are discussed in terms of both the type and the strength of surface-molecule interactions.},
doi = {10.1006/jcis.1999.6698},
journal = {Journal of Colloid and Interface Science},
issn = {0021-9797},
number = 1,
volume = 225,
place = {United States},
year = {2000},
month = {5}
}