278237 In Situ ATR-FTIR Analyses of CO2 Adsorption Processes in Porous Coordination Polymers

Thursday, November 1, 2012: 8:55 AM
405 (Convention Center )
Jeffrey Culp1,2, Angela Goodman1, Danielle Chirdon1, Kristi Kauffman1, Lang Sui1, David Luebke1 and Christopher Matranga1, (1)U.S. Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, (2)URS Corporation, South Park, PA

The adsorption/desorption behaviors for CO2 on several different porous coordination polymers were studied using in situ attenuated total reflectance infrared spectroscopy in a high pressure cell.  The significant IR adsorption cross section of CO2 and the sensitivity of its IR adsorption bands to the adsorption pore environment make the molecule well-suited for in situ IR investigations.  Give the potential benefits of the spectroscopic technique, literature reports of its use in the study of CO2 adsorption processes in porous coordination polymers is surprising limited.  The experimental technique is shown to be a powerful tool for investigating the CO2 adsorption mechanisms in a wide range of porous materials and composite compounds including structurally dynamic materials, porous spin crossover compounds, and mixed matrix coordination polymer/organic polymer composites. The in situ measurements under variable pressures of CO2 also allow transitions in the host structures to be correlated with the CO2 adsorption process making the technique particularly valuable in deriving a detailed description of the adsorption process in structurally dynamic materials.

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See more of this Session: Characterization of Adsorbent Materials
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