Cooperative carbon capture and steam regeneration with tetraamine-appended metal–organic frameworks
Eugene J. Kim, Rebecca L. Siegelman, Henry Z. H. Jiang, Alexander C. Forse, Jung‐Hoon Lee, Jeffrey D. Martell, Phillip J. Milner, J.M. Falkowski, Jeffrey B. Neaton, Jeffrey A. Reimer, Simon C. Weston, Jeffrey R. Long
Abstract
Steaming out captured CO 2 Although natural gas is less carbon dioxide (CO 2 )–intensive than coal, capturing its emitted CO 2 can be more challenging because combined-cycle natural gas combustion has a CO 2 concentration that is only one-third of that of coal combustion and contains high concentrations of oxygen and water. Kim et al. report on a tetraamine-functionalized magnesium metal–organic framework that displays two-step cooperative CO 2 adsorption that leads to a high CO 2 capacity and adsorption enthalpy (see the Perspective by Peh and Zhao). This material could capture CO 2 from humid air and could be regenerated with steam, a method that is more economical than temperature or pressure swing methods. Science , this issue p. 392 ; see also p. 372