Structure and catalytic activity of hemoglobin assembled with layered double hydroxide nanosheets by coprecipitation using a T-shaped microreactor

2016 ◽  
Vol 306 ◽  
pp. 1143-1150 ◽  
Author(s):  
Tianrong Zhan ◽  
Yang Song ◽  
Qi Yang ◽  
Wanguo Hou
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Double Hydroxide

Heteropolyanion Substituted Layered Double Hydroxide as Recoverable Catalyst for the Oxidative Desulfurization of Simulated Fuel Oil and Diesel

2014 ◽  
Vol 672-674 ◽  
pp. 613-618
Author(s):  
Feng Li Yu ◽  
Yang Lu
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Atmospheric Pressure ◽  
Removal Rate ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
Fuel Oil ◽  
Simulated Fuel ◽  
Recoverable Catalyst ◽  
Double Hydroxide

Heteropolyanion substituted layered double hydroxide were synthesized and used as catalysts for oxidative desulfurization in simulated fuel oil (dibenzothiophene (DBT) inn-octane) or diesel. The catalysts are recoverable and operate with high conversion efficiency under mild conditions of atmospheric pressure and 60 °C in a biphasic system using peroxide hydrogen as oxidant and acetonitrile as extractant. Zn9Al3(OH)24PW12O40(ZnAlPW), Zn9Al3(OH)24PMo12O40(ZnAlPMo) and Zn12Al4(OH)32SiW12O40(ZnAlSiW) were identified as effective catalysts for the oxidative removal of DBT from simulated fuel oil. The order of decreasing catalytic activity is ZnAlPMo > ZnAlPW > ZnAlSiW. The results show that the best catalysts, ZnAlPMo, attained to a DBT conversion of nearly 100%. All the catalysts can be readily recycled by filtration after use. The recoverable ZnAlPMo retains nearly the same catalytic activity as the fresh. ZnAlPMo was found to exhibit an ideal catalytic activity in oxidative desulfurization of diesel with a total sulfur removal rate of 91.8%.

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.

scholarly journals Efficient degradation of organic pollutants by peroxymonosulfate activated with MgCuFe-layered double hydroxide

RSC Advances ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 2284-2291 ◽  
Author(s):  
Jianyao Zhu ◽  
Zhiliang Zhu ◽  
Hua Zhang ◽  
Hongtao Lu ◽  
Yanling Qiu
Keyword(s):  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Organic Pollutants ◽  
High Catalytic Activity ◽  
Reactive Radicals ◽  
Double Hydroxide

MgCuFe-layered double hydroxide exhibited high catalytic activity to activate peroxymonosulfate for degradation of organic pollutants. SO4˙− and ·OH are the main reactive radicals involved in the degradation of organic pollutants.

Controlled synthesis of monodisperse silver nanoparticles supported layered double hydroxide catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 13239-13245 ◽  
Author(s):  
D. A. Islam ◽  
D. Borah ◽  
H. Acharya
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Alcohol Oxidation ◽  
High Catalytic Activity ◽  
Controlled Synthesis ◽  
Ag Nps ◽  
Double Hydroxide ◽  
Double Hydroxides

Monodisperse silver nanoparticles supported layered double hydroxides (Ag NPs–LDH) were preferentially deposited on the outer surfaces of pillared LDH offered a high catalytic activity on alcohol oxidation.

scholarly journals A novel three-dimensional hierarchical CuAl layered double hydroxide with excellent catalytic activity for degradation of methyl orange

RSC Advances ◽  
2017 ◽  
Vol 7 (46) ◽  
pp. 29051-29057 ◽  
Author(s):  
Jialun Li ◽  
Shuhua Zhang ◽  
Yang Chen ◽  
Tianmeng Liu ◽  
Chunyan Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Layered Double Hydroxide ◽  
Copper Ions ◽  
Three Dimensional ◽  
Organic Dye ◽  
Base Catalyst ◽  
Heterogeneous Fenton ◽  
Double Hydroxide ◽  
Degradation Of Methyl Orange

In this study, heterogeneous Fenton-like degradation of the reactive organic dye methyl orange in water was investigated over CuAl–Layered Double Hydroxide (CuAl–LDH) with high copper ions content as a base catalyst prepared by a hydrothermal synthesis.

Bifunctional catalytic activity of Ni–Co layered double hydroxide for the electro-oxidation of water and methanol

2020 ◽  
Vol 4 (10) ◽  
pp. 5254-5263
Author(s):  
Komal Patil ◽  
Pravin Babar ◽  
Dong Min Lee ◽  
Vijay Karade ◽  
Eunae Jo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Energy Conversion ◽  
Hydrothermal Method ◽  
Layered Double Hydroxide ◽  
Bifunctional Electrocatalyst ◽  
Electro Oxidation ◽  
Double Hydroxide ◽  
Energy Conversion Devices

A NiCo-LDH nanowire electrode synthesized via a hydrothermal method presented excellent catalytic activity for both the OER and MOR, proving it to be an outstanding bifunctional electrocatalyst for energy conversion devices.

Engineering NiFe layered double hydroxide by valence control and intermediate stabilization toward the oxygen evolution reaction

2020 ◽  
Vol 8 (48) ◽  
pp. 26130-26138
Author(s):  
Zhenxing Xu ◽  
Yiran Ying ◽  
Guoge Zhang ◽  
Kongzhe Li ◽  
Yan Liu ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Catalytic Activity ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Oxygen Evolution Reaction ◽  
Valence Control ◽  
Double Hydroxide

The electronic structure of NiFe layered double hydroxide was engineered by valence control and intermediate stabilization for enhanced catalytic activity.

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