New Generation of MOF-Monoliths Based on Metal Foams

Abstract

Herein, it has been developed a method to prepare metallic foams starting from Zamak5 (ZnAlCu alloy) with different pore sizes. The Zamak5 metallic foam is designed to serve as a support and metallic precursor of ZIF-8. In this way, composite materials MOF-metal can be prepared, these composites have a large number of application in energy exchange processe such as: adsorption or chemical reactions. Additionally, this method of sythesizing MOFs is environmentally friendly thanks to absence of solvents. Hanerssing the low melting point of the linker, the linker is infiltrated into the foam where the foam and the linker react to form the ZIF-8. In this way we have managed to transform part of the foam into ZIF-8 crystals that remain adhered to the foam. The foams have been characterized and modeled studying the mechanical and electrical properties, finding that both can be predected by various models. Among these, Ashby and Mortensen models for mechanical properties and Ashby and Percolation model for electrical properties stand.

Biomass-based carbon materials for CO2 capture: A review

“…Compared with carbon materials, the CO 2 uptake process of zeolites is influenced by the moisture, adsorption temperature, and pressure significantly. Although the selectivity may be enhanced by the specific metals in MOF, the preparation method of MOF is more complicated and costly, resulting in difficulty in industrialization [3]. The structure of MOF may fail due to its moisture sensitive during CO 2 uptake process.…”

Cellulose-based sponge@ZIF-8 from waste straws for water disinfection

“…ZIF-8 is composed of inorganic ligand-transition divalent metal cations and bridging substituted organic ligand-imidazole or imidazole derivative salt anions with zeolite topology. 7 ZIF materials show good performance in the fields of CO 2 capture and storage, 8 gas separation, 9 and heterogeneous catalysis. 10 ZIF-8 nanoparticles are promising functional materials for the modification of the oilfield-produced water treatment antifouling membranes.…”

Valorization of CO2 through the Synthesis of Cyclic Carbonates Catalyzed by ZIFs

“…Concerning acidic sites, Cr-MIL-101 [19,20] is one of the most efficient catalysts, where the metal loses two coordination water molecules when it is activated, forming what is called the open metal site (Lewis acid character). However, it is known that both ZIF-8 and ZIF-67 are also catalytically active [21,22], which in principle should not be. These three latter catalysts are MOFs (metal organic frameworks [23,24]), which are basically metallic nodes or clusters linked through organic ligands, which generate a three-dimensional structure with a high porosity that can exceed 4000 m 2 /g in some cases.…”