scholarly journals Correlations of acidity-basicity of solvent treated layered double hydroxides/oxides and their CO2 capture performance

2020 ◽  
Vol 49 (27) ◽  
pp. 9306-9311 ◽  
Author(s):  
D. W. Justin Leung ◽  
Chunping Chen ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Surface Area ◽  
Co2 Capture ◽  
Layered Double Hydroxides ◽  
Acid Base ◽  
Basic Properties ◽  
Double Hydroxides

Acid/basic properties of LDHs can be fine-tuned by using (AMO or AIM) solvent treatments. Furthermore, the CO2 adsorption per surface area increases with increasing acid/base ratio.

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.

Tuneable ultra high specific surface area Mg/Al-CO3layered double hydroxides

2015 ◽  
Vol 44 (37) ◽  
pp. 16392-16398 ◽  
Author(s):  
Chunping Chen ◽  
Aunchana Wangriya ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Organic Solvent ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Layered Double Hydroxides ◽  
High Specific Surface Area ◽  
Double Hydroxides

We report the synthesis of tuneable ultra high specific surface area Aqueous Miscible Organic solvent-Layered Double Hydroxides (AMO-LDHs).

scholarly journals A Comparative Study on The Adsorption Behavior of Congo Red on to ZnAl and ZnCr Layered Double Hydroxides

2020 ◽  
Vol 9 (2) ◽  
pp. 108-116
Author(s):  
Tarmizi Taher ◽  
◽  
Nyanyu Ummu Hani ◽  
Neza Rahayu Palapa ◽  
Risfidian Mohadi ◽  
...  
Keyword(s):  
Experimental Data ◽  
Surface Area ◽  
Adsorption Kinetics ◽  
Layered Double Hydroxides ◽  
Congo Red ◽  
Adsorption Process ◽  
Bet Surface Area ◽  
Pseudo Second Order ◽  
Ft Ir ◽  
Double Hydroxides

In this work, two synthetic layered double hydroxides (LDH) consists of Zn2+ as M2+ cation with different M3+ cation, i.e., Al3+ and Cr3+ were used as an adsorbent for Congo Red removal aqueous solution. Both Zn-Al and Zn-Cr LDH were characterized by X-ray diffraction, FT-IR, and BET surface area analyzer. The effect of contact time, initial dye concentration, and temperature were evaluated in a batch technique in order to investigate the characteristic of Congo Red adsorption onto both adsorbents. The experimental data were assessed according to the parameter of adsorption kinetics, isotherm, and thermodynamics. The results of LDH characterization showed that Zn-Al LDH has a higher interlayer distance than Zn-Cr LDH, although Zn-Cr LDH has a higher surface area. The FT-IR analysis indicated the interlayer space of both Zn-Cr and Zn-Al LDH was dominated by CO32- as the interlayer anion species. The adsorption kinetics study of Congo Red on both LDH revealed that the adsorption process followed the pseudo-second-order model. For the adsorption isotherm, the experimental data fit well with the Freundlich model rather than the Langmuir model. The thermodynamic study indicated that the adsorption process that occurred on both adsorbents was spontaneous with exothermic nature.

Transition-metal-based layered double hydroxides tailored for energy conversion and storage

2018 ◽  
Vol 6 (1) ◽  
pp. 12-29 ◽  
Author(s):  
Rajkumar Patel ◽  
Jung Tae Park ◽  
Madhumita Patel ◽  
Jatis Kumar Dash ◽  
E. Bhoje Gowd ◽  
...  
Keyword(s):  
Energy Storage ◽  
Transition Metal ◽  
Energy Conversion ◽  
Surface Area ◽  
Layered Double Hydroxides ◽  
Energy Storage Materials ◽  
Storage Materials ◽  
Energy Conversion And Storage ◽  
Double Hydroxides ◽  
And Storage

Transition metal based layered double hydroxides are important energy storage materials. The overall performances of the electrodes are dependent on conductivity, crystallinity, morphology, and surface area.

scholarly journals Aqueous miscible organic layered double hydroxides as catalyst precursors for biodiesel synthesis

2020 ◽  
Vol 22 (10) ◽  
pp. 3117-3121
Author(s):  
Chunping Chen ◽  
Maxwell Greenwood ◽  
Jean-Charles Buffet ◽  
Dermot O'Hare
Keyword(s):  
Density Dependence ◽  
Surface Area ◽  
Layered Double Hydroxides ◽  
Sunflower Oil ◽  
Potassium Salt ◽  
Biodiesel Synthesis ◽  
Double Hydroxides

Surface area and basicity density dependence of base-catalysed transesterification of sunflower oil by potassium salt prepared AMO-layered double hydroxides.

Investigation of Acid−Base Properties of Catalysts Obtained from Layered Double Hydroxides

2000 ◽  
Vol 104 (47) ◽  
pp. 11117-11126 ◽  
Author(s):  
Federica Prinetto ◽  
Giovanna Ghiotti ◽  
Robert Durand ◽  
Didier Tichit
Keyword(s):  
Layered Double Hydroxides ◽  
Acid Base ◽  
Double Hydroxides ◽  
Base Properties
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