Fumed silica supported PEI adsorbents are promising candidates for capturing CO2 directly from air. They have high CO2 adsorption capacity and can be regenerated under mild conditions over repeated adsorption/desorption cycles. They are easy to prepare from readily available and inexpensive materials. Being solids these adsorbents avoid many of the problems associated with existing CO2 separation technologies based on liquid amine based scrubbers. Once capture, the CO2 could be recycled to fuels and materials representing essentially a first step in an anthropogenic carbon cycle. More immediate applications include the scrubbing of CO2 from closed environments such as space stations and submarines. Supplying of CO2 free air is also important for the operation of inexpensive and robust iron-air batteries using alkaline electrolytes for large scale energy storage in grid applications.

Regenerable polyamine bbased solid adsorbents for CO<sub>2</sub> capture from the air

245th National Meeting (2013)

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

Regenerable polyamine bbased solid adsorbents for CO2 capture from the air

Regenerable polyamine bbased solid adsorbents for CO₂ capture from the air