A prominent methodology to tune the adsorption properties of solids for applications in CO2 capture is to functionalize them with amines sites, as the amine-CO2 interaction is strong under a variety of conditions . Specifically, amine-modified solids such as porous silicates and MOFs are now well-studied under conditions that simulate post-combustion CO2 capture. In addition, we have recently shown that supported amine materials are promising solids for removal of CO2 from ultra-dilute gas sources such as the ambient air [2-4].
This talk will focus on the engineering of inorganic-organic hybrids amine adsorbents to enhance their CO2 adsorption performance, with a specific focus on CO2 adsorption capacity, adsorption kinetics and stability to practical desorption conditions. The structures of various hybrid silica-based and MOF-based adsorbents were modified by tuning the both the host substrate and the surface amine functionalities. Structure-property relationships for these materials are under development, and based on these studies, we will discuss the potential to design inorganic-organic hybrid adsorbents with desired CO2 adsorption characteristics, such as the ability to extract CO2 efficiently from ambient air.
 S. Choi, J. H. Drese, C. W. Jones, ChemSusChem 2009, 2, 796-854.
 S. Choi, J. H. Drese, P. M. Eisenberger, C. W. Jones, AIChE Annual Meeting, Nashville, Tennessee, 2009.
 S. Choi, J. H. Drese, P. M. Eisenberger, C. W. Jones, Env. Sci. Technol., 2011, 45, 2420-2427.
 S. Choi, M. L. Gray, C. W. Jones, ChemSusChem, 2011, 10.1002/cssc.201000355