Divalent metal release and antimicrobial effects of layered double hydroxides

2022 ◽  
Vol 216 ◽  
pp. 106369
Author(s):  
Jazia Awassa ◽  
Damien Cornu ◽  
Samantha Soulé ◽  
Cédric Carteret ◽  
Christian Ruby ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Divalent Metal ◽  
Metal Release ◽  
Antimicrobial Effects ◽  
Double Hydroxides

scholarly journals Effect of Divalent Metal Ions on the Stability of Cu-Containing Layered Double Hydroxides

2012 ◽  
Vol 28 (07) ◽  
pp. 1714-1720 ◽  
Author(s):  
NI Zhe-Ming ◽  
◽  
LIU Jiao ◽  
XUE Ji-Long ◽  
LI Yuan ◽  
...  
Keyword(s):  
Metal Ions ◽  
Layered Double Hydroxides ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
The Stability ◽  
Double Hydroxides

Photocatalytic Degradation of Methylene Blue Over Layered Double Hydroxides Using Various Divalent Metal Ions

2019 ◽  
Vol 67 (4) ◽  
pp. 340-347 ◽  
Author(s):  
Guoxiang Pan ◽  
Minhong Xu ◽  
Kai Zhou ◽  
Yue Meng ◽  
Haifeng Chen ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Metal Ions ◽  
Photocatalytic Degradation ◽  
Layered Double Hydroxides ◽  
Divalent Metal ◽  
Divalent Metal Ions ◽  
Double Hydroxides

Acceptorless amine dehydrogenation and transamination using Pd-doped layered double hydroxides

2018 ◽  
Author(s):  
Diana Ainembabazi ◽  
Nan An ◽  
Jinesh Manayil ◽  
Kare Wilson ◽  
Adam Lee ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Oxidation States ◽  
Secondary Amines ◽  
Primary Amines ◽  
Acid Dissolution ◽  
Oxidative Amination ◽  
Strong Function ◽  
Excellent Activity ◽  
High Yields ◽  
Double Hydroxides

<div> <p>The synthesis, characterization, and activity of Pd-doped layered double hydroxides (Pd-LDHs) for for acceptorless amine dehydrogenation is reported. These multifunctional catalysts comprise Brønsted basic and Lewis acidic surface sites that stabilize Pd species in 0, 2+, and 4+ oxidation states. Pd speciation and corresponding cataytic performance is a strong function of metal loading. Excellent activity is observed for the oxidative transamination of primary amines and acceptorless dehydrogenation of secondary amines to secondary imines using a low Pd loading (0.5 mol%), without the need for oxidants. N-heterocycles, such as indoline, 1,2,3,4-tetrahydroquinoline, and piperidine, are dehydrogenated to the corresponding aromatics with high yields. The relative yields of secondary imines are proportional to the calculated free energy of reaction, while yields for oxidative amination correlate with the electrophilicity of primary imine intermediates. Reversible amine dehydrogenation and imine hydrogenation determine the relative imine:amine selectivity. Poisoning tests evidence that Pd-LDHs operate heterogeneously, with negligible metal leaching; catalysts can be regenerated by acid dissolution and re-precipitation.</p> </div> <br>

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