Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 89-96 |
| Seitenumfang | 8 |
| Fachzeitschrift | Microporous and Mesoporous Materials |
| Jahrgang | 104 |
| Ausgabenummer | 1-3 |
| Frühes Online-Datum | 18 Jan. 2007 |
| Publikationsstatus | Veröffentlicht - 23 Aug. 2007 |
Abstract
The surface permeability of zeolite crystals of type NaCaA for small alkane molecules (methane and ethane) was estimated by using a novel method, analysing NMR tracer desorption measurements. It is based on the measurement of both the relative amount of tracer exchange and the corresponding effective coefficients of intracrystalline diffusion and their correlation with the results of model calculations by dynamic Monte Carlo simulations. For the two LTA specimens investigated, already in the as-synthesized zeolite crystals notable surface resistances have been observed. Surface permeabilities have been studied in dependence on temperature, sorbate and crystal size.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Allgemeine Chemie
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Physik und Astronomie (insg.)
- Physik der kondensierten Materie
- Ingenieurwesen (insg.)
- Werkstoffmechanik
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in: Microporous and Mesoporous Materials, Jahrgang 104, Nr. 1-3, 23.08.2007, S. 89-96.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Surface barriers on nanoporous particles
T2 - A new method of their quantitation by PFG NMR
AU - Krutyeva, M.
AU - Vasenkov, S.
AU - Yang, X.
AU - Caro, J.
AU - Kärger, J.
PY - 2007/8/23
Y1 - 2007/8/23
N2 - The surface permeability of zeolite crystals of type NaCaA for small alkane molecules (methane and ethane) was estimated by using a novel method, analysing NMR tracer desorption measurements. It is based on the measurement of both the relative amount of tracer exchange and the corresponding effective coefficients of intracrystalline diffusion and their correlation with the results of model calculations by dynamic Monte Carlo simulations. For the two LTA specimens investigated, already in the as-synthesized zeolite crystals notable surface resistances have been observed. Surface permeabilities have been studied in dependence on temperature, sorbate and crystal size.
AB - The surface permeability of zeolite crystals of type NaCaA for small alkane molecules (methane and ethane) was estimated by using a novel method, analysing NMR tracer desorption measurements. It is based on the measurement of both the relative amount of tracer exchange and the corresponding effective coefficients of intracrystalline diffusion and their correlation with the results of model calculations by dynamic Monte Carlo simulations. For the two LTA specimens investigated, already in the as-synthesized zeolite crystals notable surface resistances have been observed. Surface permeabilities have been studied in dependence on temperature, sorbate and crystal size.
KW - NMR
KW - Permeability
KW - Simulations
KW - Surface barriers
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=34547175260&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2007.01.010
DO - 10.1016/j.micromeso.2007.01.010
M3 - Article
AN - SCOPUS:34547175260
VL - 104
SP - 89
EP - 96
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
SN - 1387-1811
IS - 1-3
ER -