Flying MOFs: polyamine-containing fluidized MOF/SiO2 hybrid materials for CO2 capture from post-combustion flue gas

摘要: Solid-state synthesis ensures a high loading and well-dispersed growth of large collection metal–organic framework (MOF) nanostructures within series commercially available mesoporous silica. This approach provides general, highly efficient, scalable, environmentally friendly, inexpensive strategy for shaping MOFs into fluidized form, thereby allowing their application in fluidized-bed reactors diverse applications, such as CO2 capture from post-combustion flue gas. A polyamine-impregnated MOF/SiO2 hybrid sorbents were evaluated under simulated gas conditions packed-bed reactor. Hybrid containing moderate (Zn)ZIF-8 are the most promising terms adsorption capacity long-term stability (up to 250 cycles presence contaminants: SO2, NOx H2S) successfully prepared at kilogram scale. These demonstrated excellent fluidizability performance relevant process visual Moreover, biochemically inspired covalently linking polyamines through strong phosphine bonds has been first introduced this work powerful versatile post-synthesis modification MOF chemistry, thus providing novel alternative towards more stable solid sorbents.