PORPHYRIN-BASED CHEMISTRY FOR CARBON CAPTURE AND SEQUESTRATION
Winnie K. Wong-Ng, Lawrence P. Cook, Greg Brewer
Two major types of porphyrinic framework structures offer promise for carbon capture and sequestration (CCS) applications: 1) metal-organic frameworks (MOFs) in which the porphyrins serve as struts linking vertices comprised of metal -based clusters; 2) covalently-bonded organic frameworks (COFs) in which the porphyrins are bonded together as part of a continuous structure forming the framework. Porphyrinic MOFs synthesized to date offer a somewhat greater range of internal porosities and structural moieties, while porphyrinic COFs may have greater stability under a variety of ambient conditions. For successful CCS applications, several factors related to the chemistry are important, including sorptive capacity, adsorption/desorption kinetics and thermodynamics, cycling lifetime, environmental compatibility, and cost -effective schemes for efficient synthesis. The possibility of using porphyrinic materials in multiple roles, e.g. for capture, storage, and electrolytic CO2 reduction, is of special interest.
porphyrins, carbon capture and sequestration, CO2 electrochemical reduction, metal-organic frameworks (MOFs), covalently-bonded organic frameworks (COFs)