Patent ID: 11298676

Abstract:
The invention concerns new types of porous coordination polymers (MOF) and a method for their preparation. MOFs have been prepared through synthesis of salts of trivalent cations M3+, the source of which are aluminium, chromium, iron or yttrium salts, it is advantageous if of chlorides, nitrates or sulphates, with linkers carrying two or more phosphinic groups under presence of solvent. Linkers are phenylene-1,4-bis(R phosphinic acid) (PBPA) and biphenylene-4,4′-bis(R phosphinic acid) (BBPA). For the prepared MOFs, the structure has been tested using x-ray powder diffraction, specific surface and porousness which have been characterised through adsorption isotherm of nitrogen and further the stability of prepared MOFs has been determined using thermogravimetric analysis.All the prepared MOFs have been stable around 400° C. and have contained mesopores or micropores where hydrogen or CO2, for example, can be stored.