Quantification of ammonia binding sites in Davison (Type 3A) zeolite desiccant : a solid-state Nitrogen-15 MAS NMR spectroscopy investigation.
The quantitative analysis of ammonia binding sites in the Davison (Type 3A) zeolite desiccant using solid-state {sup 15}N MAS NMR spectroscopy is reported. By utilizing 15N enriched ammonia ({sup 15}NH{sub 3}) gas, the different adsorption/binding sites within the zeolite were investigated as a function of NH{sub 3} loading. Using {sup 15}N MAS NMR multiple sites were resolved that have distinct cross-polarization dynamics and chemical shift behavior. These differences in the {sup 15}N NMR were used to characterize the adsorption environments in both the pure 3A zeolite and the silicone-molded forms of the desiccant.
- Research Organization:
- Sandia National Laboratories
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 918356
- Report Number(s):
- SAND2004-0022
- Country of Publication:
- United States
- Language:
- English
Similar Records
Location and orientation of adsorbed molecules in zeolites from solid-state REAPDOR NMR.
Solid-state NMR study of acid sites in zeolite Y using ammonia and trimethylamine as probe molecules
Interrogating the Lewis Acidity of Metal Sites in Beta Zeolites with 15N Pyridine Adsorption Coupled with MAS NMR Spectroscopy
Journal Article
·
Fri Dec 31 23:00:00 EST 2004
· Proposed for presentation at the
·
OSTI ID:952142
Solid-state NMR study of acid sites in zeolite Y using ammonia and trimethylamine as probe molecules
Journal Article
·
Thu Apr 09 00:00:00 EDT 1987
· J. Phys. Chem.; (United States)
·
OSTI ID:6631303
Interrogating the Lewis Acidity of Metal Sites in Beta Zeolites with 15N Pyridine Adsorption Coupled with MAS NMR Spectroscopy
Journal Article
·
Wed Sep 21 00:00:00 EDT 2016
· Journal of Physical Chemistry. C
·
OSTI ID:1462348