2025 AIChE Annual Meeting

(669g) Evaluating Applicability of Muf-16 for Post Combustion Capture of CO2

Authors

Yoseph Guta, Georgia Tech
Anthony Cochran, Georgia Institute of Technology
Suhyun Kim, Georgia Institute of Technology
David S. Sholl, Oak Ridge National Laboratory
MUF-16 (MUF = Massey University Framework), a Co based MOF, shows excellent selectivity for CO2/X separations (X = N2, C2H4, CH4 etc.). However, it shows no CO2 adsorption in presence of humidity, implying that it might necessitate desiccant beds for effective post-combustion CO2 capture. In this work, we establish a gas phase SMB like design for this separation. The capture is process engineered such that only a small fraction of the bed sees H2O in the entire cycle. Our design which enables a more continuous operation of the system benefits from low heats of adsorption of CO2 and H2O in the MOF, no competitive sorption and the fast desorption kinetics of adsorbates. The material is also tested for stability in presence of humid acid gases and shows no sign of degradation even after exposures to 4000 ppm hours of SO2, with 85% or higher relative humidity.