Details
| Original language | English |
|---|---|
| Pages (from-to) | 340-344 |
| Number of pages | 5 |
| Journal | Microporous and Mesoporous Materials |
| Volume | 129 |
| Issue number | 3 |
| Early online date | 12 Jun 2009 |
| Publication status | Published - 15 Apr 2010 |
Abstract
The options of IR microscopy for monitoring the evolution of guest (propane) profiles in nanoporous materials (MOF Zn(tbip)) during transient sorption experiments are exploited in a phenomenological study of the formation and variation of transport resistances on the surface of these materials ("surface barriers"). Novel crystal faces, produced by a simple breaking of the crystals, are found to exhibit notably reduced surface resistances while, with increasing time of storage under ambient atmosphere, the surface resistances are found to be enhanced. Differences in the permeabilities on opposite crystal faces appear in a notable asymmetry in the transient concentration profiles. Symmetry is re-established in crystals with two fresh fracture faces.
Keywords
- Diffusion, MOF, Permeation, Surface barriers, Zn(tbip)
ASJC Scopus subject areas
- Chemistry(all)
- General Chemistry
- Materials Science(all)
- General Materials Science
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
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In: Microporous and Mesoporous Materials, Vol. 129, No. 3, 15.04.2010, p. 340-344.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Exploring the nature of surface barriers on MOF Zn(tbip) by applying IR microscopy in high temporal and spatial resolution
AU - Chmelik, Christian
AU - Hibbe, Florian
AU - Tzoulaki, Despina
AU - Heinke, Lars
AU - Caro, Jürgen
AU - Li, Jing
AU - Kärger, Jörg
PY - 2010/4/15
Y1 - 2010/4/15
N2 - The options of IR microscopy for monitoring the evolution of guest (propane) profiles in nanoporous materials (MOF Zn(tbip)) during transient sorption experiments are exploited in a phenomenological study of the formation and variation of transport resistances on the surface of these materials ("surface barriers"). Novel crystal faces, produced by a simple breaking of the crystals, are found to exhibit notably reduced surface resistances while, with increasing time of storage under ambient atmosphere, the surface resistances are found to be enhanced. Differences in the permeabilities on opposite crystal faces appear in a notable asymmetry in the transient concentration profiles. Symmetry is re-established in crystals with two fresh fracture faces.
AB - The options of IR microscopy for monitoring the evolution of guest (propane) profiles in nanoporous materials (MOF Zn(tbip)) during transient sorption experiments are exploited in a phenomenological study of the formation and variation of transport resistances on the surface of these materials ("surface barriers"). Novel crystal faces, produced by a simple breaking of the crystals, are found to exhibit notably reduced surface resistances while, with increasing time of storage under ambient atmosphere, the surface resistances are found to be enhanced. Differences in the permeabilities on opposite crystal faces appear in a notable asymmetry in the transient concentration profiles. Symmetry is re-established in crystals with two fresh fracture faces.
KW - Diffusion
KW - MOF
KW - Permeation
KW - Surface barriers
KW - Zn(tbip)
UR - http://www.scopus.com/inward/record.url?scp=73749085643&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2009.06.006
DO - 10.1016/j.micromeso.2009.06.006
M3 - Article
AN - SCOPUS:73749085643
VL - 129
SP - 340
EP - 344
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
IS - 3
ER -