Adsorption of carbon dioxide onto PDA-CP-MS41 adsorbent

摘要

Carbon dioxide was adsorbed onto mesoporous adsorbent of PDA-CP-MS41, which was synthesized by CP-MS41 with propylene diamine, in a laboratory-scale packed-bed. Experiments were carried out at different adsorption temperatures (30-60℃), amounts of adsorbent (1-3 g), and flow rates of nitrogen (15-60 cmVmin) to obtain the breakthrough curves of CO_2. These curves were tested by the deactivation model, which combined the adsorption of CO_2 and the deactivation of adsorbent particles. The adsorption rate constant and the deactivation rate constant were evaluated through analysis of the experimental breakthrough data using a nonlinear least squares technique. The experimental breakthrough data were fitted very well to the deactivation model than the adsorption isotherm models in the literature.