Carbon dioxide capture in amine functionalized metal-organic frameworks

Thomas McDonal (University of California, Berkeley)

Efforts to synthesize and characterize metal-organic frameworks appended with strongly basic amine functional groups for CO2 adsorption from gas mixtures will be presented. Metal-organic frameworks have shown significant potential for carbon capture applications owing to their high surface areas and tunable surface chemistry. The post-synthetic incorporation of aliphatic diamine molecules onto coordinatively unsaturated metal-sites within metal-organic frameworks has been shown to be an effective method for drastically enhancing the capacity of metal-organic frameworks for CO2 at very low partial pressures. In particular, the adsorbent resultant from incorporation of N,N-dimethylethylenediamine into the pores of Mg2(dobpdc) exhibited a capacity in excess of 2 mmol/g for CO2 adsorption from dry air at 298 K. Significant selectivity enhancements are also realized from amine incorporation across all pressure ranges. Recent efforts at illuminating the effects of water on the adsorption capacity will be discussed as well as the effects of high adsorption enthalpy on sorbent regeneration energy.

Back to Seminar Home Page

Last modified 23-May-2013 by website owner: NCNR (attn: )