Using nano-cast model porous media and integrated gas sorption to improve fundamental understanding and data interpretation in mercury porosimetry
Rigby, Scan P. ; Evbuomwan, Irene O. ; Watt-Smith, Matthew J. ; Edler, Karen LU
and Fletcher, Robin S.
(2006)
In Particle and Particle Systems Characterization
23(1).
p.82-93
- Abstract
The mechanisms of entrapment, and the nanoscopic spatial distribution, of the residual mercury within nano-cast and amorphous porous media (pore sizes ∼1-100 nm) following high-pressure penetration have been studied. It has been shown that, even at the nanoscale, one of the same two principle mechanisms that have been observed previously in mercury porosimetry experiments on macroscopic glass pore models also occur within a given amorphous, nanoporous solid. Using percolation theory to interpret novel, integrated gas sorption experiments, entrapment was shown to arise, either because of the presence of sufficiently narrow pore necks interspersed between larger voids, or due to non-random, longer-range structural heterogeneity. The... (More)
The mechanisms of entrapment, and the nanoscopic spatial distribution, of the residual mercury within nano-cast and amorphous porous media (pore sizes ∼1-100 nm) following high-pressure penetration have been studied. It has been shown that, even at the nanoscale, one of the same two principle mechanisms that have been observed previously in mercury porosimetry experiments on macroscopic glass pore models also occur within a given amorphous, nanoporous solid. Using percolation theory to interpret novel, integrated gas sorption experiments, entrapment was shown to arise, either because of the presence of sufficiently narrow pore necks interspersed between larger voids, or due to non-random, longer-range structural heterogeneity. The threshold "snap-off" ratio parameter for the entrapment process has also been directly measured but found to be considerably smaller than seen previously for macroporous materials. The techniques employed here enable information not previously available for nanoporous systems to be determined, and therefore to be incorporated into simulations of mercury porosimetry on those materials.
(Less)
- author
- Rigby, Scan P.
; Evbuomwan, Irene O.
; Watt-Smith, Matthew J.
; Edler, Karen
LU
and Fletcher, Robin S.
- publishing date
- 2006-06
- type
- Contribution to journal
- publication status
- published
- keywords
- Entrapment, Gas sorption, Mercury porosimetry, Percolation
- in
- Particle and Particle Systems Characterization
- volume
- 23
- issue
- 1
- pages
- 12 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- scopus:33745784170
- ISSN
- 0934-0866
- DOI
- 10.1002/ppsc.200601012
- language
- English
- LU publication?
- no
- id
- 170e9da8-aeff-487f-8c2c-45224c31b180
- date added to LUP
- 2023-05-04 18:49:36
- date last changed
- 2023-06-13 09:16:00
@article{170e9da8-aeff-487f-8c2c-45224c31b180,
abstract = {{<p>The mechanisms of entrapment, and the nanoscopic spatial distribution, of the residual mercury within nano-cast and amorphous porous media (pore sizes ∼1-100 nm) following high-pressure penetration have been studied. It has been shown that, even at the nanoscale, one of the same two principle mechanisms that have been observed previously in mercury porosimetry experiments on macroscopic glass pore models also occur within a given amorphous, nanoporous solid. Using percolation theory to interpret novel, integrated gas sorption experiments, entrapment was shown to arise, either because of the presence of sufficiently narrow pore necks interspersed between larger voids, or due to non-random, longer-range structural heterogeneity. The threshold "snap-off" ratio parameter for the entrapment process has also been directly measured but found to be considerably smaller than seen previously for macroporous materials. The techniques employed here enable information not previously available for nanoporous systems to be determined, and therefore to be incorporated into simulations of mercury porosimetry on those materials.</p>}},
author = {{Rigby, Scan P. and Evbuomwan, Irene O. and Watt-Smith, Matthew J. and Edler, Karen and Fletcher, Robin S.}},
issn = {{0934-0866}},
keywords = {{Entrapment; Gas sorption; Mercury porosimetry; Percolation}},
language = {{eng}},
number = {{1}},
pages = {{82--93}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Particle and Particle Systems Characterization}},
title = {{Using nano-cast model porous media and integrated gas sorption to improve fundamental understanding and data interpretation in mercury porosimetry}},
url = {{http://dx.doi.org/10.1002/ppsc.200601012}},
doi = {{10.1002/ppsc.200601012}},
volume = {{23}},
year = {{2006}},
}