Rationalization of liquid assisted grinding intercalation yields of organic molecules into layered double hydroxides by multivariate analysis

RSC Advances ◽  
2016 ◽  
Vol 6 (110) ◽  
pp. 108431-108439 ◽  
Author(s):  
E. Conterosito ◽  
M. Milanesio ◽  
L. Palin ◽  
V. Gianotti
Keyword(s):  
Multivariate Analysis ◽  
Layered Double Hydroxides ◽  
Organic Molecules ◽  
Molecular Descriptors ◽  
Layered Materials ◽  
Double Hydroxides

PCA, coupled to molecular descriptors, proved to be an effective tool to rationalize the mechanochemical intercalation yields of layered materials.

Preparation of hydroxy double salts exchanged by organic compounds

1998 ◽  
Vol 13 (4) ◽  
pp. 848-851 ◽  
Author(s):  
Hiroyuki Morioka ◽  
Hideyuki Tagaya ◽  
Masa Karasu ◽  
Jun-ichi Kadokawa ◽  
Koji Chiba
Keyword(s):  
Carboxylic Acid ◽  
Carboxylic Acids ◽  
Layered Double Hydroxides ◽  
Interlayer Spacing ◽  
Layered Materials ◽  
Exchange Reactions ◽  
Double Salts ◽  
Hydroxy Double Salts ◽  
Double Hydroxides ◽  
Positively Charged

Hydroxy double salts (HDS's) comprise a class of layered materials that are similar to layered double hydroxides (LDH's) and show a comparable intracrystalline reactivity. Their anion exchange reactions occur with preincorporated anions in the hydroxide layer and with anions bound as gegenions of the positively charged layers, respectively. In this study, nitrate and acetate anions of HDS's were exchanged with anionic monoand di-carboxylic acids, and we confirmed that interlayer spacing of HDS's increased depending on the size of mono- and di-carboxylic acids. Moreover, we have prepared photofunctional materials by exchange reaction with azobenzene-p-carboxylic acid and 4–4′-azobenzenedicarboxylic acid.

Constrainment Effects of Interleaved Organic Molecules into Layered Double Hydroxides

2004 ◽  
Vol 847 ◽  
Author(s):  
Marc Dubois ◽  
El Mostafa Moujahid ◽  
Jean-Pierre Besse ◽  
Fabrice Leroux
Keyword(s):  
Layered Double Hydroxide ◽  
Hybrid Materials ◽  
Layered Double Hydroxides ◽  
Organic Molecules ◽  
Organic Dyes ◽  
Dye Molecules ◽  
Cation Composition ◽  
Double Hydroxide ◽  
Double Hydroxides ◽  
Subsequent Stabilization

ABSTRACTIncorporation and subsequent stabilization of organic molecules into layered double hydroxide are investigated. Through two types of hybrid materials, organic dyes and aniline-based monomers interleaved between LDH materials of cation composition Zn2Al and Cu2Cr respectively, it is shown that the effect of the constrainment is revealed by the interactions different according to the molecule size and stacking as exemplified by dye molecules, orange 6 and green 25 acids and two aniline-based monomers, m-amino-4-benzenesulfonic and 3-aniline-1-propanesulfonic acids.

Development of a Fast and Clean Intercalation Method for Organic Molecules into Layered Double Hydroxides

2013 ◽  
Vol 13 (3) ◽  
pp. 1162-1169 ◽  
Author(s):  
Eleonora Conterosito ◽  
Wouter Van Beek ◽  
Luca Palin ◽  
Gianluca Croce ◽  
Luana Perioli ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Organic Molecules ◽  
Double Hydroxides

Synthesis of p-sulfonated calix[4]arene-intercalated layered double hydroxides and their adsorption properties for organic molecules

2006 ◽  
Vol 26 (4-5) ◽  
pp. 655-659 ◽  
Author(s):  
Satoru Sasaki ◽  
Sumio Aisawa ◽  
Hidetoshi Hirahara ◽  
Akira Sasaki ◽  
Hirokazu Nakayama ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Organic Molecules ◽  
Adsorption Properties ◽  
Double Hydroxides

scholarly journals Catalytic use of layered materials for fine chemical syntheses

2019 ◽  
Vol 9 (1) ◽  
pp. 47-60 ◽  
Author(s):  
Sándor B. Ötvös ◽  
István Pálinkó ◽  
Ferenc Fülöp
Keyword(s):  
Layered Double Hydroxides ◽  
Layered Materials ◽  
Layered Compounds ◽  
Solid Materials ◽  
Fine Chemical ◽  
Layered Solid ◽  
Double Hydroxides

The present work reviews the catalytic use of layered solid materials for fine chemical syntheses with focus on layered double hydroxides, but including other classes of layered compounds of catalytic relevance.

Ti/ZnO–MxOy composites (M = Al, Cr, Fe, Ce): synthesis, characterization and application as highly efficient photocatalysts for hexachlorobenzene degradation

2015 ◽  
Vol 17 (40) ◽  
pp. 26690-26702 ◽  
Author(s):  
Shengjie Xia ◽  
Mengmeng Shao ◽  
Xiaobo Zhou ◽  
Guoxiang Pan ◽  
Zheming Ni
Keyword(s):  
Schiff Base ◽  
Layered Double Hydroxides ◽  
Schiff Base Complex ◽  
Layered Materials ◽  
Base Complex ◽  
Highly Efficient ◽  
Double Hydroxides

A series of novel organic–inorganic nanoscale layered materials were synthesized by intercalating the Ti-containing Schiff base complex into the interlayer of the ZnM layered double hydroxides (LDHs, M = Al, Cr, Fe, Ce).

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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