| 초록 |
Absorption capacity of MgO-based CO2 sorbent promoted by metal carbonate and nitrate salts was analyzed by thermal gravimetric analyzer (TGA) and their kinetics were investigated by deriving rate constant using Linear Driving Force (LDF) model, with the assumption that the CO2 sorption process followed 1st order kinetics. Effects of metal carbonate and nitrate salt types, mole ratios of Mg/carbonate/nitrate, and type of Mg precursor on the capacity and rate for CO2 sorption were investigated comprehensively. According to the change of metal types among Li, Na, K and Ca with varying the composition of MgO/carbonate/nitrate, CO2 absorption capacity and rate were changed dramatically. The details of the preparation of MgO-based CO2 sorbents and their evaluation as CO2 sorbent at intermediate temperature range (300oC~500oC) will be addressed in this presentation. |
