Magnetic behavior of Mg–Al–Zn–Fe mixed oxides from precursors layered double hydroxide

2012 ◽  
Vol 407 (16) ◽  
pp. 3125-3127
Author(s):  
M.I. Oliva ◽  
A. Heredia ◽  
C.I. Zandalazini ◽  
M. Crivello ◽  
E. Corchero
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Magnetic Behavior ◽  
Double Hydroxide

Synthesis, characterization and magnetic behavior of Mg–Fe–Al mixed oxides based on layered double hydroxide

2013 ◽  
Vol 342 ◽  
pp. 38-46 ◽  
Author(s):  
Angélica C. Heredia ◽  
Marcos I. Oliva ◽  
Ulises Agú ◽  
Carlos I. Zandalazini ◽  
Sergio G. Marchetti ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Magnetic Behavior ◽  
Double Hydroxide

scholarly journals CuAlCe Oxides Issued from Layered Double Hydroxide Precursors for Ethanol and Toluene Total Oxidation

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 870
Author(s):  
Hadi Dib ◽  
Rebecca El Khawaja ◽  
Guillaume Rochard ◽  
Christophe Poupin ◽  
Stéphane Siffert ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Synergetic Effect ◽  
Catalytic Performance ◽  
Total Oxidation ◽  
X Ray ◽  
Volatile Organic ◽  
Temperature Programmed ◽  
Toluene Total Oxidation ◽  
Double Hydroxide

CuAlCe oxides were obtained from hydrotalcite-type precursors by coprecipitation using a M2+/M3+ ratio of 3. The collapse of the layered double hydroxide structure following the thermal treatment leads to the formation of mixed oxides (CuO and CeO2). The catalytic performance of the copper-based catalysts was evaluated in the total oxidation of two Volatile Organic Compounds (VOCs): ethanol and toluene. XRD, SEM Energy-Dispersive X-ray Spectrometry (EDX), H2-temperature programmed reduction (TPR) and XPS were used to characterize the physicochemical properties of the catalysts. A beneficial effect of combining cerium with CuAl-O oxides in terms of redox properties and the abatement of the mentioned VOCs was demonstrated. The sample with the highest content of Ce showed the best catalytic properties, which were mainly related to the improvement of the reducibility of the copper species and their good dispersion on the surface. The presence of a synergetic effect between the copper and cerium elements was also highlighted.

Calcined Ni—Al layered double hydroxide as a catalyst for total oxidation of volatile organic compounds: Effect of precursor crystallinity

2007 ◽  
Vol 61 (2) ◽  
Author(s):  
Z. Mikulová ◽  
P. Čuba ◽  
J. Balabánová ◽  
T. Rojka ◽  
F. Kovanda ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrothermal Treatment ◽  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Slight Effect ◽  
Total Oxidation ◽  
Volatile Organic ◽  
Double Hydroxide ◽  
Short Time ◽  
Oxidation Of Ethanol

AbstractThe effect of hydrothermal treatment on properties (crystallinity, porous structure, reducibility, acidity, basicity, and catalytic activity and selectivity in toluene and ethanol total oxidation) of Ni—Al layered double hydroxide precursors and related mixed oxides was examined. The hydrothermal treatment increased considerably both the content of crystalline phase and LDH crystallite size. On the other hand, only a slight effect of the precursor hydrothermal treatment on crystallinity of the related Ni—Al mixed oxides obtained by calcination at 450°C was observed. The reducibility of NiO particles appeared to be hindered considerably compared to the reducibility of pure NiO. Catalytic activity of the Ni—Al mixed oxides prepared from the precursors hydrothermally treated for a short time (4 h) was the highest. The highest amount of acetaldehyde formed during the total oxidation of ethanol, i.e. the worst selectivity was found for the calcined Ni—Al LDH without hydrothermal treatment.

Synthesis, Characterization, and Catalytic Behavior of Mg–Al–Zn–Fe Mixed Oxides from Precursors Layered Double Hydroxide

2011 ◽  
Vol 50 (11) ◽  
pp. 6695-6703 ◽  
Author(s):  
Angélica C. Heredia ◽  
Marcos I. Oliva ◽  
Carlos I. Zandalazini ◽  
Ulises A. Agú ◽  
Griselda A. Eimer ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Catalytic Behavior ◽  
Double Hydroxide

Mixed oxides derived from Cu–Co layered double hydroxide nanorods: Preparation, characterization and their catalytic activities

2010 ◽  
Vol 496 (1-2) ◽  
pp. 317-323 ◽  
Author(s):  
Hongbo Liu ◽  
Qingze Jiao ◽  
Yun Zhao ◽  
Hansheng Li ◽  
Chongbo Sun ◽  
...  
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Catalytic Activities ◽  
Double Hydroxide

Ca–Mg–Al ternary mixed oxides derived from layered double hydroxide for selective etherification of glycerol to short-chain polyglycerols

2019 ◽  
Vol 173 ◽  
pp. 79-87 ◽  
Author(s):  
Prissana Sangkhum ◽  
Jirapong Yanamphorn ◽  
Aunchana Wangriya ◽  
Chawalit Ngamcharussrivichai
Keyword(s):  
Layered Double Hydroxide ◽  
Mixed Oxides ◽  
Short Chain ◽  
Double Hydroxide
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