Caratterizzazione di materiali per la cattura di CO2 da processi di combustione e gassificazione

Preliminary results of a research at CNR are reported about the characterization of various materials for CO2 capture in course of chemical reaction or post-process. A thermo-gravimetric technique as well as a fixed bed reactor were used for characterizing natural and artificial sorbents like limestone, dolomite, Ca oxide, synthetic zeolite, yellow tuff from Campania, and a geopolymer. The limestone proved to be effective and cheap for high temperature absorption, although a decay of its sorption capability was noted along the time. For low temperature sorption, artificial and natural (tuff) zeolites exhibited an appreciable adsorption capability and can be a valid option for post process CO2 removal.