title: Rapid Screening of Immobilized Amine CO2 Sorbents for Steam Stability by Their Direct Contact with Liquid H2 O.
abstract: Rapid testing of hydrophilic and hydrophobic basic immobilized amine sorbents (BIAS) for CO2 capture stability under practical conditions was achieved by direct contact of the sorbents with flowing liquid water. Losses in both CO2 capture capacity and amine content of sorbents after exposure to 0.5 mL min(-1) of H2 O at 25 °C for 40 min followed similar trends as losses observed after exposure to N2 /steam (105 °C, 7 % H2 O) for 10 h. We also found that hydrophobic TMPED helped stabilize sorbents to H2 O, which was confirmed by DRIFTS and combined TGA-DSC.
authors.affiliation: ORISE, National Energy Technology Laboratory, 626 Cochrans Mill Road, P.O. Box 10940, Pittsburgh, PA, 15236-0940 (USA).
authors.forename: Walter Christopher
authors.initials: WC
authors.lastname: Wilfong
authors.affiliation: AECOM, National Energy Technology Laboratory (USA).
authors.forename: Brian W
authors.initials: BW
authors.lastname: Kail
authors.affiliation: Functional Materials Division, National Energy Technology Laboratory. mac.gray@netl.doe.gov.
authors.forename: McMahan L
authors.initials: ML
authors.lastname: Gray
mesh_terms: D000327:Adsorption; D000588:Amines / Q000737:chemistry*; D002245:Carbon Dioxide / Q000737:chemistry* / Q000302:isolation & purification; D057927:Hydrophobic and Hydrophilic Interactions; D013227:Steam; D013997:Time Factors
chemical_list: D000588:Amines; D013227:Steam; D002245:Carbon Dioxide
keywords: amines; carbon dioxide capture; silanes; sorbents; stability