SOLID-STATE NMR-STUDY OF ORDERED MESOPOROUS ALUMINOSILICATE MCM-41 SYNTHESIZED ON A LIQUID-CRYSTAL TEMPLATE

Authors
KOLODZIEJSKI W CORMA A NAVARRO MT PEREZPARIENTE J
Citation
W. Kolodziejski et al., SOLID-STATE NMR-STUDY OF ORDERED MESOPOROUS ALUMINOSILICATE MCM-41 SYNTHESIZED ON A LIQUID-CRYSTAL TEMPLATE, Solid state nuclear magnetic resonance, 2(5), 1993, pp. 253-259
Citations number
12
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical","Physics, Condensed Matter
Journal title
Solid state nuclear magnetic resonance → ACNP
ISSN journal
09262040
Volume
2
Issue
5
Year of publication
1993
Pages
253 - 259
Database
ISI
SICI code
0926-2040(1993)2:5<253:SNOOMA>2.0.ZU;2-M
Abstract
A novel mesoporous aluminosilicate MCM-41, synthesized in a liquid-cry stal system, was characterized by magic angle spinning NMR. Convention al Bloch decay and cross-polarization spectra were compared. The Al-27 spectra showed that the calcined material was highly siliceous, while Si-29 NMR proved that it was rich in single and geminal silanol group s. Two kinds of the silanol groups were detected: exchanging and non-e xchanging protons with water on the timescale of the H-1 experiment. T he C-13 spectra of the uncalcined material were consistent with the co ncept of the micellar arrangement of the cetyltrimethylammonium templa te inside MCM-41.