Details
| Original language | English |
|---|---|
| Pages (from-to) | 8041-8047 |
| Number of pages | 7 |
| Journal | Journal of the American Chemical Society |
| Volume | 129 |
| Issue number | 25 |
| Publication status | Published - 27 Jun 2007 |
Abstract
The intracrystalline concentration profiles during molecular uptake of methanol by an initially empty, single crystal of microporous manganese(II) formate (Mn(HCO2)2), representing an ionic inorganic-organic hybrid within the MOF family, are monitored by interference microscopy. Within these profiles, a crystal section could be detected where over the total of its extension (≈2 μm x 50 μm x 30 μm) molecular uptake ideally followed the pattern of one-dimensional diffusion. Analysis of the evolution of intracrystalline concentration in this section directly yields the permeability of the crystal surface and the intracrystalline diffusivity as a function of the concentration of the total range of 0 ≤ θ ≤ 0.57 covered in the experiments. Within this range, the surface permeability is found to increase by 1 order of magnitude, while, within the limits of accuracy (±30%), the transport diffusivity remains constant, thus reflecting the properties of the lattice gas model.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Catalysis
- Chemistry(all)
- Biochemistry, Genetics and Molecular Biology(all)
- Biochemistry
- Chemical Engineering(all)
- Colloid and Surface Chemistry
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In: Journal of the American Chemical Society, Vol. 129, No. 25, 27.06.2007, p. 8041-8047.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Intracrystalline diffusivities and surface permeabilities deduced from transient concentration profiles
T2 - Methanol in MOF manganese formate
AU - Kortunov, Pavel V.
AU - Heinke, Lars
AU - Arnold, Mirko
AU - Nedellec, Yannic
AU - Jones, Deborah J.
AU - Caro, Jürgen
AU - Kärger, Jörg
PY - 2007/6/27
Y1 - 2007/6/27
N2 - The intracrystalline concentration profiles during molecular uptake of methanol by an initially empty, single crystal of microporous manganese(II) formate (Mn(HCO2)2), representing an ionic inorganic-organic hybrid within the MOF family, are monitored by interference microscopy. Within these profiles, a crystal section could be detected where over the total of its extension (≈2 μm x 50 μm x 30 μm) molecular uptake ideally followed the pattern of one-dimensional diffusion. Analysis of the evolution of intracrystalline concentration in this section directly yields the permeability of the crystal surface and the intracrystalline diffusivity as a function of the concentration of the total range of 0 ≤ θ ≤ 0.57 covered in the experiments. Within this range, the surface permeability is found to increase by 1 order of magnitude, while, within the limits of accuracy (±30%), the transport diffusivity remains constant, thus reflecting the properties of the lattice gas model.
AB - The intracrystalline concentration profiles during molecular uptake of methanol by an initially empty, single crystal of microporous manganese(II) formate (Mn(HCO2)2), representing an ionic inorganic-organic hybrid within the MOF family, are monitored by interference microscopy. Within these profiles, a crystal section could be detected where over the total of its extension (≈2 μm x 50 μm x 30 μm) molecular uptake ideally followed the pattern of one-dimensional diffusion. Analysis of the evolution of intracrystalline concentration in this section directly yields the permeability of the crystal surface and the intracrystalline diffusivity as a function of the concentration of the total range of 0 ≤ θ ≤ 0.57 covered in the experiments. Within this range, the surface permeability is found to increase by 1 order of magnitude, while, within the limits of accuracy (±30%), the transport diffusivity remains constant, thus reflecting the properties of the lattice gas model.
UR - http://www.scopus.com/inward/record.url?scp=34347246327&partnerID=8YFLogxK
U2 - 10.1021/ja071265h
DO - 10.1021/ja071265h
M3 - Article
AN - SCOPUS:34347246327
VL - 129
SP - 8041
EP - 8047
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 25
ER -