Design of Improved Metal-Organic Framework (MOF) H2 Adsorbents

Abstract

Abstract:We attempted synthesis of the hydrogen adsorption material suitable for the fuel cell vehicles (FCEVs). The designed and synthesized Cu 2 (3,5-Pyridinedicarboxylate) 2 (=Cu 2 PDC 2 ) metal complex showed an extremely high volumetric uptake density for a physisorption material, even though the specific surface area was only about 1,000 m 2 g −1 . Factors for high uptake properties are considered to be the increased adsorption sites per unit area, the increased adsorption energy, and the optimized design of pore shapes. High hydrogen uptake on volumetric basis is especially effective for FCEV because the tank volume is reduced. It is expected that property prediction using computational simulation and sophisticated analysis at the micro and nano levels will become an indispensable tool in the design of functional materials.

A microporous metal–organic framework with both open metal and Lewis basic pyridyl sites for highly selective C2H2/CH4and C2H2/CO2gas separation at room temperature

“…The Henry's law constant (K H ) is equal to exp(A 0 ), and the selectivity can be obtained from the constant K H . As shown in the previous work, 18 the 3D framework of UTSA-50 is composed of paddle wheel dinuclear Cu 2 units which are connected with eight neighboring Cu 2 units by PDC ligands (Fig. 1b).…”

“…Results and discussionUTSA-50 was synthesized according to the procedure in ref 18. in which Cu(NO 3 ) 2 and 3,5-PDC in DMF with addition of a small amount of acetic acid at 70 C for 7 days gave small green crystals.…”

Metal-Organic Framework Reinforced Acrylic Polymer Marine Coatings

“…The research being conducted on reticular structures that are comprised of the linkage of metal nodes and organic linkers to form crystalline, meso-porous, metal organic frameworks (MOFs), has significantly increased in the last three decades. MOFs have found extensive applications in areas such as catalysis [ 1 ], energy storage like lithium- [ 2 ] and sodium-ion batteries [ 3 ], super capacitors [ 4 ], electro-catalysts in water splitting [ 5 ], hydrogen generation from alcohols [ 6 ], hydrogen storage [ 7 ], water harvesting [ 8 ], CO 2 sequestration [ 9 ], gas separation [ 10 ], luminescence [ 11 ], sensors [ 12 ] etc. MOFs are intrinsically modular in nature, which gives researchers excellent control over structure and porosity.…”

Organic cations controlling the nuclearity of copper(ii) 2,5-pyridinedicarboxylates

“…1 The vast literature and structural complexities of the multiple binding modes have sustained the vibrant synthetic challenges of developing new complexes from such ligands. 2 The metallo-organic frameworks derived from pyridinedicarboxylate have shown superior hydrogen gas uptake 3 and catalytic activities, 4 as well as other interesting properties such as magnetic and optical properties. The formation of lamellar structures through p-stacking in 3,5-pyridinedicarboxylates 5 or 2,6-pyridinedicarboxylates 6 is a useful feature of these ligands.…”

“…There are mononuclear, 7a dinuclear 7b and tetranuclear 7c complexes of these ligands. Among the positional isomers of 2,n-pyridinedicarboxylic acids (n ¼ 2, 3,4,5,6) the 2,5pyridinedicarboxylate has two carboxylates at opposite sides of the pyridine ring and also has the nitrogen atom of the pyridine located next to the carboxylate. Thus, it can form a chelate complex and in such a chelate one carboxylate would be free or would coordinate to another metal.…”