The Influence of Water on Polymer/Silica Hollow Fiber Sorbents for CO2/N2 Sorption
Ying Labreche, Steven K Burgess, Ryan P. Lively, Christopher W. Jones*, William J. Koros*
Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, GA 30332-0100, USA Abstract Rapid Temperature Swing Adsorption (RTSA) processes offer potential techniques for the capture of CO2 from flue gas mixtures. Understanding the interactions between the numerous gas phase components and the sorbent material is necessary to develop high performance sorbents for this application. Moisture is commonly present in flue gas applications and can interfere with or alter the mechanisms involved in the adsorption of CO2 and other gases, so understanding effects of moisture is of particular importance. In this study, we consider the influence on equilibrium water vapor sorption and CO2 capacity of different amine loaded silica/polymer hollow fiber composites. The advantage of different polymer binders (cellulose acetate vs. Torlon, a poly(amide-imide)) for the silica particles, as the well the impact of an amine dispersant, glycerol, are discussed in detail.