Solid-state 29Si MAS NMR studies of diatoms: structural characterization of biosilica deposits

2003 ◽  
Vol 375 (5) ◽  
pp. 630-634 ◽  
Author(s):  
R. Bertermann ◽  
N. Kröger ◽  
R. Tacke
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Mas Nmr ◽  
29Si Mas Nmr ◽  
Nmr Studies

Structural characterization of ionomer glasses by multinuclear solid state MAS-NMR spectroscopy

2007 ◽  
Vol 353 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Shigeki Matsuya ◽  
Artemis Stamboulis ◽  
Robert G. Hill ◽  
Robert V. Law
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Structural Characterization ◽  
Mas Nmr

Synthesis and characterization of periodic porous benzene-silica hybrid powders with cubic and hexagonal symmetries

2002 ◽  
Vol 726 ◽  
Author(s):  
Valérie Goletto ◽  
Anne-Claire Bled ◽  
Gregor Trimmel ◽  
Michel Wong Chi Man ◽  
Hee-Gweon Woo ◽  
...  
Keyword(s):  
Solid State ◽  
Solvent Extraction ◽  
Mas Nmr ◽  
Synthesis And Characterization ◽  
Nmr Studies ◽  
Acidic Conditions ◽  
Silica Hybrid

AbstractOrganosilica powders with uniformly distributed bridging benzene groups have been synthesized from the condensation of bis- or tris-(triethoxysilyl)benzene in the presence of cetyltrimethylammoniumbromide. The syntheses were performed under strong acidic conditions and the organic groups were always incorporated without cleavage of the Si-C bonds as indicated by solid state MAS NMR studies. Depending on the nature of the precursors, materials with different ordering were obtained: a 2D-hexagonal (p6m) phase was formed from the 1,3-bis(triethoxysilyl)benzene, whereas the 1,4-bis(triethoxysilyl)benzene lead to a cubic Pm3n phase. The surfactant was removed either by solvent extraction or by controlled calcination, which did not affect the mesostructure of the materials.

Sol–gel synthesis, phase composition, morphological and structural characterization of Ca10(PO4)6(OH)2: XRD, FTIR, SEM, 3D SEM and solid-state NMR studies

2016 ◽  
Vol 1119 ◽  
pp. 1-11 ◽  
Author(s):  
Simonas Kareiva ◽  
Vytautas Klimavicius ◽  
Aleksandr Momot ◽  
Jonas Kausteklis ◽  
Aleksandra Prichodko ◽  
...  
Keyword(s):  
Phase Composition ◽  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Sol Gel ◽  
Nmr Studies ◽  
Sol Gel Synthesis

Solid-State 29Si VACP/MAS NMR Studies of Silicon-Accumulating Plants: Structural Characterization of Biosilica Deposits

2000 ◽  
Vol 55 (6) ◽  
pp. 459-461 ◽  
Author(s):  
Rüdiger Bertermann ◽  
Reinhold Tacke
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Nmr Spectra ◽  
Mas Nmr ◽  
Typical Pattern ◽  
Nmr Studies ◽  
Polysilicic Acid ◽  
Freeze Dried ◽  
Pattern Characteristic

A series of silicon-accumulating plants [different Equisetum (horse tail) species, Echium vulgare, and Symphytum officinale] were studied by solid-state 29Si NMR experiments. For this purpose, selected parts of these plants were freeze-dried and then investigated by solid-state 29Si VACP/MAS NMR spectroscopy. The 29Si NMR spectra of these plants are quite similar and exhibit the typical pattern characteristic of polysilicic acid (amorphous silica).

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

Structural Characterization of Glass from the Inversion of23Na and27Al 3Q-MAS NMR Spectra

1999 ◽  
Vol 103 (47) ◽  
pp. 10356-10364 ◽  
Author(s):  
F. Angeli ◽  
T. Charpentier ◽  
P. Faucon ◽  
J.-C. Petit
Keyword(s):  
Structural Characterization ◽  
Nmr Spectra ◽  
Mas Nmr

A Methyl Group Bridging on Three Metal Atoms. Solid-State and Solution Structural Characterization of the [Re3(μ-H)3(μ3-CH3)(CO)9]-Anion

1999 ◽  
Vol 121 (10) ◽  
pp. 2307-2308 ◽  
Author(s):  
T. Beringhelli ◽  
G. D'Alfonso ◽  
M. Panigati ◽  
F. Porta ◽  
P. Mercandelli ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Methyl Group ◽  
Metal Atoms

Spectroscopic characterization of the polycrystalline copper(I) di-n-butyldithiophosphate cluster – Cu8[S2P(O-n-Bu)2]6(μ8-S): Solid-state 31P CP/MAS and static 65Cu NMR studies

2006 ◽  
Vol 359 (12) ◽  
pp. 3903-3910 ◽  
Author(s):  
Daniela Rusanova ◽  
Kevin J. Pike ◽  
Ray Dupree ◽  
John V. Hanna ◽  
Oleg N. Antzutkin ◽  
...  
Keyword(s):  
Solid State ◽  
Spectroscopic Characterization ◽  
Polycrystalline Copper ◽  
Nmr Studies
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