(91)Zr and (25)Mg solid-state NMR characterization of the local environments of the metal centers in microporous materials
authors Zhu, JF; Lin, Z; Yan, ZM; Huang, YN
nationality International
journal CHEMICAL PHYSICS LETTERS
keywords INTEGER QUADRUPOLAR NUCLEI; HIGH-TEMPERATURE MG-25; STRUCTURAL-CHARACTERIZATION; THERMAL-DECOMPOSITION; MAGNETIC-RESONANCE; SIGNAL ENHANCEMENT; ALUMINOPHOSPHATE; SPECTROSCOPY; FRAMEWORK; TITANOSILICATES
abstract Solid-state NMR was used to examine the local environments around the metal centers in microporous zirconium silicates and an aluminophosphate incorporated with Mg. (91)Zr and (25)Mg Quadrupolar Carr-Purcell Meiboom-Gill (QCPMG) spectra were obtained at different magnetic fields from which the quadrupolar and chemical shift parameters were extracted. The relationships between the NMR parameters and metal local structures were discussed. Theoretical calculations were performed on the model clusters. The work shows that using sensitivity enhancement techniques such as QCPMG and performing NMR experiments at the highest possible magnetic fields allow one to probe low-gamma, quadrupolar metal centres in microporous materials. (C) 2008 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0009-2614
year published 2008
volume 461
issue 4-6
beginning page 260
ending page 265
digital object identifier (doi) 10.1016/j.cplett.2008.07.030
web of science category Chemistry, Physical; Physics, Atomic, Molecular & Chemical
subject category Chemistry; Physics
unique article identifier WOS:000258395300019
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.029
5 year journal impact factor 1.724
category normalized journal impact factor percentile 40.473
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg