Contribution of silica gels to superimposed Si-29 MAS NMR spectra of Y zeolites dealuminated by steaming

Authors
Lutz, W Heidemann, D Hubert, C Wieker, W
Citation
W. Lutz et al., Contribution of silica gels to superimposed Si-29 MAS NMR spectra of Y zeolites dealuminated by steaming, Z ANORG A C, 627(11), 2001, pp. 2559-2564
Citations number
15
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
ISSN journal
00442313 → ACNP
Volume
627
Issue
11
Year of publication
2001
Pages
2559 - 2564
Database
ISI
SICI code
0044-2313(200111)627:11<2559:COSGTS>2.0.ZU;2-J
Abstract
The Si-29 MAS NMR spectra of in situ formed amorphous aluminosilicates and silica gels superimpose the spectra of steamed and chemically modified DAY- T, DAY-T-acid, DAY-T-alkaline and DAY-Talkaline+acid zeolites. In compariso n with XRD data, the Si/Al-NMR ratios of the zeolite framework are determin ed to high or to low.