Details
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 604-608 |
| Seitenumfang | 5 |
| Fachzeitschrift | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Jahrgang | 630 |
| Ausgabenummer | 4 |
| Publikationsstatus | Veröffentlicht - 11 März 2004 |
Abstract
Ion-exchanged LSX (Si/Al = 1.02) and 13X (Si/Al = 1.18) zeolite series (Li, Na, K, Rb, Ca, Sr, Ba exchanged) were hydrothermally treated at temperatures between 423 K and 513 K in liquid water under autogeneous water vapour pressure. Beside X-ray powder diffraction, the molybdate method and the water sorption uptake have been used to characterize the treated samples. The LSX and 13X zeolites show a similar hydrothermal behaviour in spite of their different framework Si/Al ratios depending only on the type of introduced cations. Significant destabilizing effects were observed especially in presence of K and Rb cations as well as the bivalent Sr and Ba cations. The LSX zeolites are hydrothermally more stable than LTA zeolites of same cations despite their same chemical framework composition.
ASJC Scopus Sachgebiete
- Chemie (insg.)
- Anorganische Chemie
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in: Zeitschrift fur Anorganische und Allgemeine Chemie, Jahrgang 630, Nr. 4, 11.03.2004, S. 604-608.
Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review
}
TY - JOUR
T1 - Hydrothermal stability of the novel zeolite type LSX in comparison to the traditional 13X modification
AU - Buhl, J. Ch
AU - Gerstmann, M.
AU - Lutz, W.
AU - Ritzmann, A.
PY - 2004/3/11
Y1 - 2004/3/11
N2 - Ion-exchanged LSX (Si/Al = 1.02) and 13X (Si/Al = 1.18) zeolite series (Li, Na, K, Rb, Ca, Sr, Ba exchanged) were hydrothermally treated at temperatures between 423 K and 513 K in liquid water under autogeneous water vapour pressure. Beside X-ray powder diffraction, the molybdate method and the water sorption uptake have been used to characterize the treated samples. The LSX and 13X zeolites show a similar hydrothermal behaviour in spite of their different framework Si/Al ratios depending only on the type of introduced cations. Significant destabilizing effects were observed especially in presence of K and Rb cations as well as the bivalent Sr and Ba cations. The LSX zeolites are hydrothermally more stable than LTA zeolites of same cations despite their same chemical framework composition.
AB - Ion-exchanged LSX (Si/Al = 1.02) and 13X (Si/Al = 1.18) zeolite series (Li, Na, K, Rb, Ca, Sr, Ba exchanged) were hydrothermally treated at temperatures between 423 K and 513 K in liquid water under autogeneous water vapour pressure. Beside X-ray powder diffraction, the molybdate method and the water sorption uptake have been used to characterize the treated samples. The LSX and 13X zeolites show a similar hydrothermal behaviour in spite of their different framework Si/Al ratios depending only on the type of introduced cations. Significant destabilizing effects were observed especially in presence of K and Rb cations as well as the bivalent Sr and Ba cations. The LSX zeolites are hydrothermally more stable than LTA zeolites of same cations despite their same chemical framework composition.
KW - Cation exchange
KW - Hydrothermal stability
KW - Phase transformation
KW - Zeolites
UR - http://www.scopus.com/inward/record.url?scp=4644343948&partnerID=8YFLogxK
U2 - 10.1002/zaac.200300370
DO - 10.1002/zaac.200300370
M3 - Article
AN - SCOPUS:4644343948
VL - 630
SP - 604
EP - 608
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 4
ER -