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Poly(glycidyl amine)-Loaded SBA-15 Sorbents for CO2 Capture from Dilute and Ultradilute Gas Mixtures by Achintya R. Sujan; Dharam Raj Kumar; Miles Sakwa-Novak; Eric W. Ping; Bo Hu; Sang Jae Park; Christopher W. Jones is a Materials Science article available to read on EtoBox.

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Solid-supported amine-based polymers are known to be effective for CO 2 capture from dilute streams, including flue gas and ambient air. In this work, we report the synthesis of well-defined poly(glycidyl amine) (PGA) prepared via controlled anionic polymerization followed by postpolymerization modifications and demonstrate the use of PGA-loaded mesoporous silica (SBA-15) for CO 2 capture from dilute streams (flue gas) as well as from ultradilute streams (direct air capture). A series of PGA materials with varied molecular weight (χ n = 15, 25, and 50) is synthesized via anionic ring-opening polymerization (ROP) and subsequent postpolymerization modifications. The resulting polymers are obtained with relatively narrow polydispersity and predetermined molecular weights. PGA is impregnated into mesoporous silica SBA-15 at different amine loadings (3-8 mmol of N/g of SiO 2 ) and characterized by thermogravimetric analysis (TGA) and N 2 physisorption techniques. The performance of the PGA/SBA-15 composites is investigated over a range of CO 2 partial pressures and adsorption temperatures and compared to a benchmark material, branched poly(ethylenimine) (PEI)/SBA-15. PGA shows trends in

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Author

Achintya R. Sujan; Dharam Raj Kumar; Miles Sakwa-Novak; Eric W. Ping; Bo Hu; Sang Jae Park; Christopher W. Jones

Published

2019

Language

EN

Field

Materials Science (Physical Sciences)