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.

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.

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

Modified Acid‐Base ZSM‐5 Derived from Core‐Shell ZSM‐5@ Aqueous Miscible Organic‐Layered Double Hydroxides for Catalytic Cracking of n ‐Pentane to Light Olefins

ChemCatChem ◽  
2020 ◽  
Vol 12 (17) ◽  
pp. 4288-4296 ◽  
Author(s):  
Chadatip Rodaum ◽  
Anawat Thivasasith ◽  
Duangkamon Suttipat ◽  
Thongthai Witoon ◽  
Sitthiphong Pengpanich ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Catalytic Cracking ◽  
Light Olefins ◽  
Core Shell ◽  
Acid Base ◽  
Double Hydroxides

scholarly journals Cover Feature: Modified Acid‐Base ZSM‐5 Derived from Core‐Shell ZSM‐5@ Aqueous Miscible Organic‐Layered Double Hydroxides for Catalytic Cracking of n ‐Pentane to Light Olefins (ChemCatChem 17/2020)

ChemCatChem ◽  
2020 ◽  
Vol 12 (17) ◽  
pp. 4199-4199
Author(s):  
Chadatip Rodaum ◽  
Anawat Thivasasith ◽  
Duangkamon Suttipat ◽  
Thongthai Witoon ◽  
Sitthiphong Pengpanich ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Catalytic Cracking ◽  
Light Olefins ◽  
Core Shell ◽  
Acid Base ◽  
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 Fe-based layered double hydroxides for removing arsenic from water: sorption–desorption–regeneration

2021 ◽  
Author(s):  
Tuğba Türk ◽  
Taha Boyraz ◽  
İbrahim Alp
Keyword(s):  
Aqueous Solution ◽  
Layered Double Hydroxides ◽  
Arsenic Removal ◽  
High Surface ◽  
High Surface Area ◽  
Exchange Capacity ◽  
Alkaline Solutions ◽  
Order Kinetic ◽  
Order Kinetic Model ◽  
Double Hydroxides

Abstract Since the presence of arsenic in the waters of the world causes serious health effects on people, it is very important to remove it. Layered double hydroxides have a high surface area and high anion exchange capacity, and because of this feature, it is a potential adsorbent to remove arsenic. For regeneration and reuse of adsorbents, researchers in some limited studies have used agents such as acids and alkalis. Media replacement accounts for approximately 80% of the total operational and maintenance costs. In this paper, an adsorption/desorption/regeneration study was carried out with MgFeHT to determine the desorption properties of the adsorbent and to examine its reusability. The best alkaline desorption solution was determined from two different alkaline solutions: NaOH and KH2PO4. As(V) adsorption capacity of the MgFeHT at different pH (3–12) using the arsenic aqueous solution (with 2,000 μg As(V)/L) was evaluated. For the adsorption process, the experimental data are fitted well with the pseudo-second-order kinetic model and the Langmuir model. Moreover, the concentration of 2,000 μg/L arsenic was reduced to below the legal limit determined by the WHO (<10 μg/L). The regeneration studies were conducted on the adsorptive media used in the arsenic removal system. The regeneration efficiency of As(V) was maintained 98.5% for four regeneration cycles using 0.5 M NaOH. MgFeHT was successfully regenerated with an aqueous solution of NaOH and was reused with a small loss of sorption efficiency.

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