Molten ionic oxides for CO2 capture at medium to high temperatures
Name
c9ta09122j.pdf
Size
1018.77 KB
Format
Adobe PDF
Checksum (MD5)
9792234dbdacad877945f8ce5413e2e3
Author(s)
Harada, Takuya
Halliday, Cameron
Jamal, Aqil
Hatton, T. Alan
Date Issued
2019
Journal
Journal of Materials Chemistry A
Publisher
Royal Society of Chemistry (RSC)
Citation
Harada, Takuya, Cameron Halliday, Aqil Jamal, and T. Alan Hatton, "Molten ionic oxides for CO2 capture at medium to high temperatures." Journal of Materials Chemistry A 7, 38 (Oct. 2019): p. 21827-34 doi 10.1039/c9ta09122j ©2019 Author(s)
Version
Final published version
Abstract
The development of efficient low cost CO2 capture systems is a critical challenge for mitigating climate change while meeting global energy demand. Herein, we demonstrate the first liquid absorbents for CO2 capture at medium to high temperatures (500 to 700° C). Molten ionic oxides based on sodium borate and the mixed alkali-metal borates show remarkably fast kinetics and intrinsic regenerability, with no observable deterioration in performance over multiple absorption–desorption cycles under both temperature- and pressure-swing operations. The behavior of the molten ionic oxides is ascribed to the instantaneous formation of carbonate ions in the molten oxides without the diffusional transport restrictions imposed by solid product layers characteristic of solid adsorbents. The new liquid absorbents will enable continuous processing and thermal integration via a simple absorber–desorber arrangement, thereby overcoming the challenges previously restraining high temperature CO2 capture and opening up new opportunities in clean energy production. ©2019
Subjects
Renewable Energy, Sustainability and the Environment
General Materials Science
General Chemistry
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
Terms of Use
Creative Commons Attribution Noncommercial 3.0 unported license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1039/c9ta09122j
