Characterization of V–Mo–W Mixed Oxide Catalyst Surface Species by51V Solid-State Dynamic Nuclear Polarization NMR

2017 ◽  
Vol 121 (38) ◽  
pp. 20857-20864 ◽  
Author(s):  
Aany S. L. Thankamony ◽  
Stefan Knoche ◽  
Sarah Bothe ◽  
Alfons Drochner ◽  
Anil P. Jagtap ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Mixed Oxide ◽  
Nuclear Polarization ◽  
Oxide Catalyst ◽  
Catalyst Surface ◽  
Surface Species ◽  
State Dynamic ◽  
Mixed Oxide Catalyst

Endogenous Stable Radicals for Characterization of Thermally Carbonized Porous Silicon by Solid-State Dynamic Nuclear Polarization 13C NMR

2015 ◽  
Vol 119 (33) ◽  
pp. 19272-19278 ◽  
Author(s):  
Joakim Riikonen ◽  
Séverinne Rigolet ◽  
Claire Marichal ◽  
Fabien Aussenac ◽  
Jacques Lalevée ◽  
...  
Keyword(s):  
Solid State ◽  
Porous Silicon ◽  
13C Nmr ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
State Dynamic ◽  
Stable Radicals

Heteronuclear Cross-Relaxation under Solid-State Dynamic Nuclear Polarization

2016 ◽  
Vol 138 (51) ◽  
pp. 16572-16575 ◽  
Author(s):  
Diane Daube ◽  
Victoria Aladin ◽  
Jörg Heiliger ◽  
Johannes J. Wittmann ◽  
Dominic Barthelmes ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Cross Relaxation ◽  
State Dynamic

Effect of electron spin dynamics on solid-state dynamic nuclear polarization performance

2014 ◽  
Vol 16 (35) ◽  
pp. 18694-18706 ◽  
Author(s):  
Ting Ann Siaw ◽  
Matthias Fehr ◽  
Alicia Lund ◽  
Allegra Latimer ◽  
Shamon A. Walker ◽  
...  
Keyword(s):  
Solid State ◽  
Electron Spin ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Spin Dynamics ◽  
Nitroxide Radicals ◽  
Flip Flop ◽  
State Dynamic ◽  
Spin Flip ◽  
Electron Spin Dynamics

Optimum integral EPR saturation, determined by electron T1e and electron spin flip-flop rate, maximizes solid-state DNP performance using nitroxide radicals.

Dinitroxides for Solid State Dynamic Nuclear Polarization

2012 ◽  
Vol 43 (1-2) ◽  
pp. 251-261 ◽  
Author(s):  
Cédric Ysacco ◽  
Hakim Karoui ◽  
Gilles Casano ◽  
François Le Moigne ◽  
Sébastien Combes ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
State Dynamic

Multi-responsive cellulose nanocrystal–rhodamine conjugates: an advanced structure study by solid-state dynamic nuclear polarization (DNP) NMR

2014 ◽  
Vol 16 (47) ◽  
pp. 26322-26329 ◽  
Author(s):  
Li Zhao ◽  
Wei Li ◽  
Andreas Plog ◽  
Yeping Xu ◽  
Gerd Buntkowsky ◽  
...  
Keyword(s):  
Solid State ◽  
Dynamic Nuclear Polarization ◽  
Cellulose Nanocrystals ◽  
Nuclear Polarization ◽  
Structure Study ◽  
Cellulose Nanocrystal ◽  
Stimuli Responsive ◽  
State Dynamic

Monitoring stimuli-responsive cellulose nanocrystals with surface-attached rhodamine spiroamide of low amount using DNP-enhanced ssNMR spectroscopy.

scholarly journals Preparation and Characterization of Mixed-Oxide Catalyst

2019 ◽  
pp. 293-302
Author(s):  
M. Alhassan ◽  
U. Z. Faruq ◽  
A. Galadima ◽  
M. Suleiman ◽  
Y. Nasiru ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Weight Loss ◽  
Crystallite Size ◽  
Mixed Oxide ◽  
Oxide Catalyst ◽  
Ftir Analysis ◽  
Absorption Bands ◽  
Mixed Oxide Catalyst ◽  
Zro2 Catalyst

Solid heterogeneous CuO-MoO3/ZrO2 catalyst was prepared by impregnation using suitable precursor materials supported over zirconia. Upon calcination at 450°C for 2 hours, available techniques were employed for the characterization. The available oxides and minerals in the catalyst were revealed by the XRF and XRD profiles respectively. The catalyst crystallite size (131.6nm) was obtained using the Bragg’s equation from the latter. Thermal analysis showed three weight loss stages between (49.25-152.06°C), (152.06-559.47°C) and (559.47-752.0°C) while presence of sulphate and zirconia oxides was revealed by the FTIR analysis due to appearance of absorption bands around 1225-980cm-1 and 700-600 cm-1 respectively.

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