In situ polymerization of the metal-organic framework 5 (MOF-5) by the use of maghnite-H + as a green solid catalyst

Metal-organic framework MOF-5 (Zn4O(BDC)3, BDC : 1,4 benzenedicarboxylic) is a microporous material with a large specific surface area and high porosity formed by benzenedicaroboxylic acid as organic ligand and zinc nitrate hexahydrate as metal ion . This material is mainly used in the field of automobile industry as a container for storing hydrogen (alternative fuel) and for the environmental preservation by trapping CO2 (greenhouse gas emissions). The present study shows the synthesis of this material using a clay called Maghnite-H + as catalytic support in order to enhance the yield which increases from 35% to 63% and improve the thermal stability of MOF-5. Maghnite-H + is a montmorillonite sheet silicate clay, exchanged with protons, it is an efficient catalyst for polymerization of many vinylic and heterocyclic monomers. The structure of resulting products is