Multifunctional Microporous MOFs Exhibiting Gas/Hydrocarbon Adsorption Selectivity, Separation Capability and Three‐Dimensional Magnetic Ordering

Abstract

Microporous materials [M3(HCOO)6] · DMF (M = Mn, Co, Ni) were synthesized solvothermally and structurally characterized by single crystal and powder X‐ray diffraction methods. The metal network exhibits diamondoid connectivity and the overall framework gives rise to zigzag channels along the b axis where guest dimethylformamide molecules reside. The effective pore size of these channels is ∼5–6 Å. The materials feature high thermal stability and permanent porosity with relatively small pore diameters which are attributed to the extensive strong dative bonding between the metal centers and formate molecules. The title compounds exhibit interesting multi‐fold gas adsorption and magnetic properties. The adsorption study of a series of alcohols, aromatics, and linear hydrocarbons revealed strong control of the adsorbent channel structures on their adsorption capacity and selectivity. The study also indicated possibility of using these materials for separation of close boiling chemicals (e.g., ethylbenzene and p‐xylene) via pressure swing adsorption (PSA) process and molecules with different diffusion parameters via kinetic‐based process. Three‐dimensional spontaneous magnetic ordering was found in all three network structures investigated and at ground states they behave somewhat like soft magnets.

MOF-derived porous NiO nanoparticle architecture for high performance supercapacitors

“…1a), all the diffraction peaks can be assigned to monoclinic Ni 3 (HCOO) 6 and are consistent with the simulated pattern (based on crystal data of the published results [11]), indicating the high purity of the Ni-MOF. The SEM image (Fig.…”

Metal–organic-framework embellished through ion etching method for highly enhanced electrochemical oxygen evolution reaction catalysis

“…As shown in Fig. 2a, lines I, II, III, and IV belonged to Ni MOF, Ni-MOF-Fe-1, Ni-MOF-Fe-2, and Ni-MOF-Fe-3, respectively, and all the peaks of each sample were well fitted with [Ni 3 (HCOO) 6 ]·DMF reported by Li et al , 41 which verified the successful synthesis of target MOF.…”

A Highly Hydrophobic Metal−Organic Framework Zn(BDC)(TED)0.5 for Adsorption and Separation of CH3OH/H2O and CO2/CH4: An Integrated Experimental and Simulation Study

“…The capacity of n-C 6 in Zn(BDC)(TED) 0.5 is exceptionally large due to the highly porous structure and hydrophobic nature, and it is about 2.5 and 3 times larger than in silicalite and cobalt formate MOF, respectively. 45,46 Our simulation results agree well with the simulation results of n-C 6 in Zn(BDC)(TED) 0.5 by Krishna and van Baten. 20 A recent experimental study reported the kinetic separation of C 6 isomers using fixed-bed adsorption.…”