Scholle, K.f.m.g.j.; Veeman, W.s.:
Aluminum-27 magic angle spinning nuclear magnetic resonance studies of zeolite TPA-ZSM-5.
1985
In: Journal of Physical Chemistry (J.Phys.Chem.), Jg. 89 (1985), Heft 10, S. 1850 - 1852
Artikel/Aufsatz in Zeitschrift / Fach: Chemie
Titel:
Aluminum-27 magic angle spinning nuclear magnetic resonance studies of zeolite TPA-ZSM-5.
Autor(in):
Scholle, K.f.m.g.j.; Veeman, W.s. im Online-Personal- und -Vorlesungsverzeichnis LSF anzeigen
Erscheinungsjahr:
1985
Erschienen in:
Journal of Physical Chemistry (J.Phys.Chem.), Jg. 89 (1985), Heft 10, S. 1850 - 1852
ISSN:

Abstract:

The observation by 27Al magic angle spinning NMR of distinct Al tetrahedral sites in TPA-ZSM-5 (TPA = Pr4N+) in contrast to Na, H-ZSM-5 is related to the TPA/Al ratio in zeolite TPA-ZSM-5. For TPA-ZSM-5 with a TPA/Al ratio >1, only 1 27Al resonance is obsd. at 53.5 ppm. In the case of a TPA/Al ratio <1, an addnl. 27Al resonance is obsd. at 60.0 ppm, due to the hydrated Na ions needed for the neutralization of AlO4- tetrahedrons not charge compensated by TPA+.