Rapid Screening of Immobilized Amine CO2 Sorbents for Steam Stability by Their Direct Contact with Liquid H2 O.

Walter Christopher Wilfong, Brian W Kail, McMahan L Gray

Index: ChemSusChem 8 , 2041-5, (2015)

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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.© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.