This presentation discusses our recent development of a high performance porous organic material with hierarchical pore structures for CO2 capture. The material has characteristics of high nitrogen contents, large surface area of microporosity, and more importantly, a hierarchical pore distribution of both micropores and mesopores in one material. The last feature is beneficial to improve the CO2 adsorption/desorption kinetics. Materials based on polypyrrole (PPy, 21 wt% of N element) polymers with controlled distribution of mesopores and micropores show high CO2 adsorption capacity of up to 7.3 mmol/g (320 mg/g) at 0 oC and 4.8 mmol/g at 25 oC under 1 bar pressure. The adsorption reaches equilibrium within 10 seconds under 0.11 sub-bar pressure and desorption of CO2 under vacuum completely regenerates the porous materials for another cycle. These results represent one of the best performances of the porous organic materials reported so far and still retain a lot of space for further improvement of the materials' structures, compositions and capacities.

Developing hierarchical porosities in organic materials for CO<sub>2</sub> capture

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Developing hierarchical porosities in organic materials for CO2 capture

Developing hierarchical porosities in organic materials for CO₂ capture