skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Pore size analysis of activated carbons from argon and nitrogen porosimetry using density functional theory

Abstract

The authors present isotherms calculated from density functional theory for the adsorption of argon in model slit-shaped carbon pores at 77 K. The model isotherms are used to interpret experimental argon uptake measurements and to obtain the pore size distributions of several porous carbons. A similar set of density measurements and to obtain the pore size distributions of several porous carbons. A similar set of density functional theory isotherms, previously reported for nitrogen adsorption on carbon slit pores at 77 K, are used to determine pore size distributions for the same set of carbons. The pore size distribution maxima, mean pore widths, and specific pore volumes measured using the two different probe gases are all found to agree to within approximately 8% on average. Some of the differences in the pore size distributions obtained from argon and nitrogen porosimetry may be attributable to quadrupolar interactions of the nitrogen molecules with functional groups on the carbon surface.

Authors:
; ;
Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (US)
OSTI Identifier:
20080288
Resource Type:
Journal Article
Journal Name:
Langmuir
Additional Journal Information:
Journal Volume: 16; Journal Issue: 11; Other Information: PBD: 30 May 2000; Journal ID: ISSN 0743-7463
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ACTIVATED CARBON; ARGON; NITROGEN; POROSITY; ADSORPTION ISOTHERMS; PORE STRUCTURE

Citation Formats

Dombrowski, R.J., Hyduke, D.R., and Lastoskie, C.M. Pore size analysis of activated carbons from argon and nitrogen porosimetry using density functional theory. United States: N. p., 2000. Web. doi:10.1021/la990827a.
Dombrowski, R.J., Hyduke, D.R., & Lastoskie, C.M. Pore size analysis of activated carbons from argon and nitrogen porosimetry using density functional theory. United States. doi:10.1021/la990827a.
Dombrowski, R.J., Hyduke, D.R., and Lastoskie, C.M. Tue . "Pore size analysis of activated carbons from argon and nitrogen porosimetry using density functional theory". United States. doi:10.1021/la990827a.
@article{osti_20080288,
title = {Pore size analysis of activated carbons from argon and nitrogen porosimetry using density functional theory},
author = {Dombrowski, R.J. and Hyduke, D.R. and Lastoskie, C.M.},
abstractNote = {The authors present isotherms calculated from density functional theory for the adsorption of argon in model slit-shaped carbon pores at 77 K. The model isotherms are used to interpret experimental argon uptake measurements and to obtain the pore size distributions of several porous carbons. A similar set of density measurements and to obtain the pore size distributions of several porous carbons. A similar set of density functional theory isotherms, previously reported for nitrogen adsorption on carbon slit pores at 77 K, are used to determine pore size distributions for the same set of carbons. The pore size distribution maxima, mean pore widths, and specific pore volumes measured using the two different probe gases are all found to agree to within approximately 8% on average. Some of the differences in the pore size distributions obtained from argon and nitrogen porosimetry may be attributable to quadrupolar interactions of the nitrogen molecules with functional groups on the carbon surface.},
doi = {10.1021/la990827a},
journal = {Langmuir},
issn = {0743-7463},
number = 11,
volume = 16,
place = {United States},
year = {2000},
month = {5}
}