Alkali exchanged SSZ-13 adsorbents were investigated for their applicability in separating N2 from CO2 in flue gas streams using a dynamic breakthrough method. In contrast to IAST calculations based on equilibrium isotherms, K+ exchanged SSZ-13 was found to yield the best N2 productivity under dynamic conditions where diffusion properties play a significant role. This was attributed to the selective, partial blockage of access to the CHA cavities enhancing the separation potential in a 15/85 CO2/N2 binary gas mixture.
Revised: July 8, 2019 |
Published: May 2, 2018
Citation
Bower J.K., D. Barpaga, S. Prodinger, R. Krishna, H.T. Schaef, B.P. McGrail, and M.A. Derewinski, et al. 2018.Dynamic adsorption of CO2/N2 on cation-exchanged chabazite SSZ-13: A breakthrough analysis.ACS Applied Materials & Interfaces 10, no. 17:14287-14291.PNNL-SA-133039.doi:10.1021/acsami.8b03848