scholarly journals Uncovering selective and active Ga surface sites in gallia–alumina mixed-oxide propane dehydrogenation catalysts by dynamic nuclear polarization surface enhanced NMR spectroscopy

2021 ◽  
Author(s):  
Pedro Castro-Fernández ◽  
Monu Kaushik ◽  
Zhuoran Wang ◽  
Deni Mance ◽  
Evgenia Kountoupi ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Mixed Oxide ◽  
Nuclear Polarization ◽  
Propane Dehydrogenation ◽  
Alumina Nanoparticles ◽  
Lewis Acidity ◽  
Coordination Geometry ◽  
Surface Sites ◽  
Surface Enhanced

Coordination geometry and Lewis acidity of Ga and Al (bulk and surface) sites in mixed oxide gallia–alumina nanoparticles is correlated with the performance in propane dehydrogenation.

scholarly journals Structure of Colloidal Quantum Dots from Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy

2015 ◽  
Vol 137 (43) ◽  
pp. 13964-13971 ◽  
Author(s):  
Laura Piveteau ◽  
Ta-Chung Ong ◽  
Aaron J. Rossini ◽  
Lyndon Emsley ◽  
Christophe Copéret ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Colloidal Quantum Dots ◽  
Surface Enhanced

In Situ XRD and Dynamic Nuclear Polarization Surface Enhanced NMR Spectroscopy Unravel the Deactivation Mechanism of CaO-Based, Ca3Al2O6-Stabilized CO2 Sorbents

2018 ◽  
Vol 30 (4) ◽  
pp. 1344-1352 ◽  
Author(s):  
Sung Min Kim ◽  
Wei-Chih Liao ◽  
Agnieszka M. Kierzkowska ◽  
Tigran Margossian ◽  
Davood Hosseini ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
In Situ Xrd ◽  
Surface Enhanced ◽  
Deactivation Mechanism

scholarly journals Surface enhanced dynamic nuclear polarization solid-state NMR spectroscopy sheds light on Brønsted–Lewis acid synergy during the zeolite catalyzed methanol-to-hydrocarbon process

2019 ◽  
Vol 10 (39) ◽  
pp. 8946-8954 ◽  
Author(s):  
Abhishek Dutta Chowdhury ◽  
Irina Yarulina ◽  
Edy Abou-Hamad ◽  
Andrei Gurinov ◽  
Jorge Gascon
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Lewis Acid ◽  
Dynamic Nuclear Polarization ◽  
Solid State Nmr ◽  
Nuclear Polarization ◽  
Solid State Nmr Spectroscopy ◽  
Surface Enhanced ◽  
Methanol To Hydrocarbon

Surface-enhanced dynamic nuclear polarization solid-state NMR spectroscopy has been applied to identify the role of surface-carbene species and elucidating Brønsted–Lewis acid synergy during the zeolite-catalyzed methanol-to-hydrocarbon process.

scholarly journals From single-site tantalum complexes to nanoparticles of TaxNy and TaOxNy supported on silica: elucidation of synthesis chemistry by dynamic nuclear polarization surface enhanced NMR spectroscopy and X-ray absorption spectroscopy

2017 ◽  
Vol 8 (8) ◽  
pp. 5650-5661 ◽  
Author(s):  
Janet C. Mohandas ◽  
Edy Abou-Hamad ◽  
Emmanuel Callens ◽  
Manoja K. Samantaray ◽  
David Gajan ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Absorption Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Single Site ◽  
X Ray ◽  
Surface Enhanced ◽  
X Ray Absorption

SOMC is exploited for synthesizing very fine nanoparticles of TaxNy/TaOxNy on silica, elucidating the strategies with DNP SENS and EXAFS.

Improved Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy through Controlled Incorporation of Deuterated Functional Groups

2013 ◽  
Vol 125 (4) ◽  
pp. 1260-1263 ◽  
Author(s):  
Alexandre Zagdoun ◽  
Aaron J. Rossini ◽  
Matthew P. Conley ◽  
Wolfram R. Grüning ◽  
Martin Schwarzwälder ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Surface Enhanced

scholarly journals Predicting the DNP-SENS efficiency in reactive heterogeneous catalysts from hydrophilicity

2018 ◽  
Vol 9 (21) ◽  
pp. 4866-4872 ◽  
Author(s):  
Eva Pump ◽  
Anissa Bendjeriou-Sedjerari ◽  
Jasmine Viger-Gravel ◽  
David Gajan ◽  
Baptiste Scotto ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Dynamic Nuclear Polarization ◽  
Heterogeneous Catalysts ◽  
Nuclear Polarization ◽  
Molecular Level ◽  
Surface Enhanced

Identification of surfaces at the molecular level has benefited from progress in dynamic nuclear polarization surface enhanced NMR spectroscopy (DNP SENS).

Improved Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy through Controlled Incorporation of Deuterated Functional Groups

2013 ◽  
Vol 52 (4) ◽  
pp. 1222-1225 ◽  
Author(s):  
Alexandre Zagdoun ◽  
Aaron J. Rossini ◽  
Matthew P. Conley ◽  
Wolfram R. Grüning ◽  
Martin Schwarzwälder ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Surface Enhanced
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