6Li and 7Li MAS NMR Studies on Fast Ionic Conducting Spinel-Type Li2MgCl4, Li2–xCuxMgCl4, Li2–xNaxMgCl4, and Li2ZnCl4

2002 ◽  
Vol 165 (2) ◽  
pp. 303-311 ◽  
Author(s):  
R. Nagel ◽  
Th.W. Groß ◽  
H. Günther ◽  
H.D. Lutz
Keyword(s):  
Mas Nmr ◽  
Nmr Studies ◽  
Spinel Type ◽  
Ionic Conducting

High-Field1H MAS and15N CP-MAS NMR Studies of Alanine Tripeptides and Oligomers:  Distinction of Antiparallel and Parallel β-Sheet Structures and Two Crystallographically Independent Molecules

2007 ◽  
Vol 111 (30) ◽  
pp. 9172-9178 ◽  
Author(s):  
Yu Suzuki ◽  
Michi Okonogi ◽  
Kazuo Yamauchi ◽  
Hiromichi Kurosu ◽  
Masataka Tansho ◽  
...  
Keyword(s):  
Mas Nmr ◽  
Nmr Studies ◽  
Independent Molecules ◽  
Cp Mas Nmr ◽  
Β Sheet

Solid-State MAS NMR Studies of Sulfonic Acid-Functionalized SBA-15

2007 ◽  
Vol 32 (4) ◽  
pp. 513-526 ◽  
Author(s):  
R. Kanthasamy ◽  
I. K. Mbaraka ◽  
B. H. Shanks ◽  
S. C. Larsen
Keyword(s):  
Solid State ◽  
Sulfonic Acid ◽  
Mas Nmr ◽  
Nmr Studies

27Al-MAS-NMR-Untersuchungen des thermischen Abbaus von NH4Al(SO4)2·12H2O / 27Al-MAS-NMR Studies on the Thermolysis of NH4Al(SO4)2· 12H2O

1991 ◽  
Vol 46 (11) ◽  
pp. 1515-1518 ◽  
Author(s):  
Gerhard Wegner ◽  
Gert Blumenthal ◽  
Dirk Müller ◽  
Dirk-Henning Menz ◽  
Antje Schmalstieg
Keyword(s):  
Nmr Spectroscopy ◽  
Structural Changes ◽  
Chemical Shifts ◽  
Mas Nmr ◽  
Nmr Studies ◽  
High Stage ◽  
27Al Mas Nmr ◽  
High Resolution Nmr ◽  
First Time

Products of the thermolysis of NH4Al-alum were prepared under dried air and characterized by X-ray powder diffraction, thermogravimetry, and for the first time by solid-state 27Al-MAS-NMR spectroscopy. It was found, that high resolution NMR spectroscopy is applicable to follow up the thermal decomposition and to indicate even minor structural changes. 27Al-MAS-NMR spectra show peaks with characteristic chemical shifts for octahedral Al-units up to a high stage of thermolysis. During the decomposition of Al2(SO4)3 to γ-Al2O3 we again observed three-peak spectra with the specific signal at ≈ 35 ppm for penta-coordinated Al ions as recently proved for the thermolysis of AlCl3 · 6 H2O.

17O MAS NMR studies of oxo-based olefin metathesis catalysts: a critical assessment of signal enhancement methods

2016 ◽  
Vol 18 (40) ◽  
pp. 28157-28163 ◽  
Author(s):  
D. Grekov ◽  
Y. Bouhoute ◽  
I. Del Rosal ◽  
L. Maron ◽  
M. Taoufik ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Supported Catalysts ◽  
Signal Enhancement ◽  
Critical Assessment ◽  
Mas Nmr ◽  
Nmr Studies ◽  
Metathesis Catalysts ◽  
Optimal Signal

We assessed the DFS parameters for robust and optimal signal enhancement in 17O NMR studies of silica-supported catalysts.

Multinuclear Mas Nmr Studies on Coked Zeolites H-ZSM-5

1991 ◽  
pp. 397-404 ◽  
Author(s):  
H. Ernst ◽  
D. Freude ◽  
M. Hunger ◽  
H. Pfeifer
Keyword(s):  
Mas Nmr ◽  
Nmr Studies
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