MOF Technologies | Adsorbent Nanomaterials

New Functional Metal-Organic Frameworks for (Enantio)selective Catalysis and Separation

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“Probing the Lewis Acid Sites and CO Catalytic Oxidation Activity of the Porous Metal-Organic Polymer [Cu(5-methylisophthalate)]”, J.

“A Novel 3D Microporous Metal-Organic Framework of Cadmium(II) Oxalate with Diamondoid Network”, Inorg.

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MOF is a new class of porous materials with large surface area ranging from 1000 to 4500 m2 g-1 (). They can be used for both hydrogen storage and carbon di oxide sequestration (). They are basically made up of two parts: (1) an inorganic cluster-called as the node and acts as the secondary building unit and (2) an organic multidentate bridging ligand between two inorganic clusters-called as spacers (). Hydrogen and CO2 can be stored in MOFs by means of physisorption ().

“Cubic Metal-Organic Polyhedrons of Nickel(II) Imidazoledicarboxylate Depositing Protons or Alkali Metal Ions”, Cryst.

Synthesis: MOF-5 was synthesized by the first two procedures reported in the literature (), dried in vacuum oven at 120°C for 2 h and stored in vacuum dessicator. The samples obtained from the two procedures are named as Sample A and B. The precursors and solvents zinc nitrate hexahydrate, dimethyl formamide, hydrogen per oxide, triethyl amine and chloroform were bought from Merck, India and terephthalic acid was bought from Loba Chemie, India. They were used as such without further purification.

His research interests include functional coordination compounds, catalytic and gas storage properties of metal–organic frameworks.

The sonochemical synthesis of MOFs is a ..

Spindle-like porous α-Fe2O3 was prepared from an iron-based metal organic framework (MOF) template. When tested as anode material for lithium batteries (LBs), this spindle-like porous α-Fe2O3 shows greatly enhanced performance of Li storage. The particle with a length and width of ∼0.8 and ∼0.4 μm, respectively, was composed of clustered Fe2O3 nanoparticles with sizes of 2O3 retained 911 mAh g–1 after 50 cycles at a rate of 0.2 C. Even when cycled at 10 C, comparable capacity of 424 mAh g–1 could be achieved.

1st Industrial-scale MOF Synthesis :: News :: …

MOF-5 samples synthesized by two different methods are similar in composition but have different crystal and pore structure. The MOF-5 samples were found to be stable at temperatures up to 350°C and hence they can be used in applications. Adsorption studies show that they are capable of adsorbing gases and hence can be used for CO2 sequestration and H2 storage.

Design&Synthesis MOF | Hydrogen | Chemistry

The team has been able to achieve this by first designing a new chelating organic compound (also called linker or ligand) and letting it bind metal ions (zinc in this case).

Metal Organic Frameworks | Sigma-Aldrich

It is evident from the SEM images () that the powder morphology is well ordered for both the samples. TEM images () reveal that sample B contains larger number of pores (0.5 to 4 nm) implying potentially high surface area. Hence sample B has been chosen for further adsorption studies. The large change in resistance (, ) upon exposure to lower concentrations of ethanol and CO2 demonstrate the availability of large number of sites for interaction between MOF-5 and ethanol/CO2. This confirms the high surface area and the adsorption capability of MOF-5 towards these species.

A typical approach to MOF synthesis is depicted in Figure 1

Yet another useful characteristic of this MOF seems to be the fact that each of these anion exchanged materials showed specific luminescent properties.