scholarly journals Water adsorbancy of high surface area layered double hydroxides (AMO-LDHs)

RSC Advances ◽  
2018 ◽  
Vol 8 (60) ◽  
pp. 34650-34655 ◽  
Author(s):  
Chunping Chen ◽  
Kanittika Ruengkajorn ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Surface Modification ◽  
Relative Humidity ◽  
Surface Area ◽  
Layered Double Hydroxides ◽  
High Surface ◽  
High Surface Area ◽  
High Water ◽  
Acid Base ◽  
Water Inhibition ◽  
Double Hydroxides

Water adsorbancy of high surface area layered double hydroxides in different relative humidity was investigated. High water inhibition can be achieved via surface modification of LDHs with stearic acid via acid–base reaction.

scholarly journals Bifunctional acid–base mesoporous silica@aqueous miscible organic-layered double hydroxides

RSC Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 3749-3754 ◽  
Author(s):  
Hongri Suo ◽  
Haohong Duan ◽  
Chunping Chen ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Mesoporous Silica ◽  
Pore Size ◽  
Layered Double Hydroxides ◽  
High Surface ◽  
High Surface Area ◽  
Core Shell ◽  
Acid Base ◽  
Double Hydroxides ◽  
Hierarchical Morphology ◽  
Size And Structure

Core@shell materials which exhibit hierarchical morphology with ultra high surface area and controllable pore size and structure have been synthesised.

Synthesis of high surface area MgAl2O4 spinel as catalyst support via layered double hydroxides-containing precursor

2016 ◽  
Vol 132-133 ◽  
pp. 243-250 ◽  
Author(s):  
Dalin Li ◽  
Miaomiao Lu ◽  
Yunbing Cai ◽  
Yanning Cao ◽  
Yingying Zhan ◽  
...  
Keyword(s):  
Surface Area ◽  
Layered Double Hydroxides ◽  
High Surface ◽  
Catalyst Support ◽  
High Surface Area ◽  
Mgal2o4 Spinel ◽  
Double Hydroxides

Synthesis and characterisation of aqueous miscible organic-layered double hydroxides

2014 ◽  
Vol 2 (36) ◽  
pp. 15102-15110 ◽  
Author(s):  
Chunping Chen ◽  
Miaosen Yang ◽  
Qiang Wang ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Surface Area ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
High Surface ◽  
High Surface Area ◽  
New Family ◽  
Double Hydroxide ◽  
Double Hydroxides

We report the synthesis and characterisation of a new family of high surface area and dispersible layered double hydroxides entitled Aqueous Miscible Organic Layered Double Hydroxide (AMO-LDH).

scholarly journals Multi-Fold Enhancement in Compressive Properties of Polystyrene Foam Using Pre-delaminated Stearate Functionalized Layer Double Hydroxides

Polymers ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 8
Author(s):  
Emmanuel O. Ogunsona ◽  
Koffi L. Dagnon ◽  
Nandika Anne D'Souza
Keyword(s):  
Surface Area ◽  
Supercritical Co2 ◽  
Hydrophobic Interactions ◽  
High Surface ◽  
High Surface Area ◽  
Bubble Nucleation ◽  
Environmentally Benign ◽  
Compressive Properties ◽  
Layer Double Hydroxides ◽  
Double Hydroxides

Developing an environmentally benign styrene foam is a critical environmental need. Supercritical CO2 use in foams has proven to be a valuable path. Adding fillers to increase bubble nucleation has been pursued concurrently. A prominent filler used is high surface area fillers, such as smectic clays. However, all studies to date show a limit of 152% in compressive moduli and 260% in the compressive stress. The values, even with such gains, limit structural application. A seminal work in 1987 by Suh and Cotton proved that carbonyl linkages in calcium carbonates and CO2 interact and impact nucleation efficiency and performance in supercritical CO2 foams. In this paper, a high surface area clay (layer double hydroxides) which begins in an exfoliated state, then functionalized with a long chain alkyl carboxylate (stearic acid) is synthesized. The result is a remarkable multi-fold improvement to the compressive properties in comparison to polystyrene (PS); a 268% and 512% increase in compressive modulus and strength, respectively. Using a pre-delaminated approach, the higher surface area was achieved in the clays. The presence of the stearate improved the interactions between the clay galleries and PS through hydrophobic-hydrophobic interactions. The glass transition temperature of the nanocomposites was observed to shift to higher values after foaming. The results point to a new path to increase performance using a pre-delaminated clay with functional groups for environmentally benign foams.

scholarly journals Surface modification of high-surface area graphites by oxygen plasma treatments

2021 ◽  
pp. 151675
Author(s):  
K. Tamargo-Martínez ◽  
S. Villar-Rodil ◽  
A. Martínez-Alonso ◽  
J.M.D. Tascón
Keyword(s):  
Surface Modification ◽  
Surface Area ◽  
Oxygen Plasma ◽  
High Surface ◽  
High Surface Area ◽  
Plasma Treatments
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