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Title: Directly Spun Epoxy-Crosslinked Polyethylenimine Fiber Sorbents for Direct Air Capture and Postcombustion Capture of CO2

Journal Article · · Energy Technology
ORCiD logo [1];  [1];  [1];  [1];  [2];  [1];  [2]
  1. National Energy Technology Laboratory (NETL), Pittsburgh, PA (United States); NETL Support Contractor, Pittsburgh, PA (United States)
  2. National Energy Technology Laboratory (NETL), Pittsburgh, PA (United States)

A novel, directly‐injected solid fiber sorbent is synthesized from a solvent‐stable, epoxy‐crosslinked basic immobilized amine sorbent (BIAS) for CO 2 capture. Leach resistance of the BIAS organics toward 1‐methyl‐2‐pyrrolidone/H 2 O (90/10, fiber solvent) reaches near 100% at the expense of CO 2 capture and is achieved by increasing the extent of crosslinking. The optimized fiber sorbent, prepared with an N,N‐diglycidyl‐4‐glycidyloxyaniline/polyethylenimine (PEI)‐0.35/1 wt. ratio, retains 79.2% of PEI and captures 0.37 (direct air capture [DAC]) and 0.67 (postcombustion) mmol CO 2 g‐fiber −1 . A nonoptimized prototype hollow fiber exhibits a stable 0.2 mmol CO 2 g‐fiber −1 during DAC cycling and is assembled into a ten‐fiber module. These results demonstrate a large step toward practical application of this material.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA (United States)
Sponsoring Organization:
USDOE
OSTI ID:
1981411
Alternate ID(s):
OSTI ID: 1995344
Journal Information:
Energy Technology, Vol. 10, Issue 9; ISSN 2194-4288
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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