Shaping metal–organic framework (MOF) powder materials for CO2 capture applications—a thermogravimetric study

Abstract

The paper presents the effect of the tabletting pressure and time on the chemical structure and crystallinity of the CuBTC and MIL-53(Al) metal–organic framework tablets. For MOFs, the no-binder tabletting method was employed using a pressure of 3.7, 7.4, 29.6 and 59.2 kN m−2, respectively, for a duration of 0.5, 1 and 2 min. The obtained tablets were crushed and sieved to obtain the desired fraction from 500 to 650 µm. In this study, the thermogravimetric test has been used for the assessment of the effect of shaping metal–organic frameworks on the CO2 adsorption properties. The examination of the CO2 sorption capacity of metal–organic frameworks was carried out using a Mettler TGA/SDTA 851e thermobalance and TG-Vacuum. The results indicate a significant effect of compression on the crystal structure and CO2 sorption capacity of MOFs.