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Lessons Learned from the Use of Unconventional Materials for CO2 Capture

Published online by Cambridge University Press:  04 July 2016

Jason E. Bara*
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
Max S. Mittenthal
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
Brian Flowers
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
Wesley F. Taylor
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
Alex H. Jenkins
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
David A. Wallace
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
J. David Roveda
Affiliation:
University of Alabama, Department of Chemical & Biological Engineering, Tuscaloosa, AL 35487-0203 USA
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Abstract

Having worked on several approaches to CO2 capture over the past decade, we have studied a great number of physical and chemical solvents as well as polymer and composite membranes. Initially, most of these materials were based upon ionic liquids (ILs), however due to challenges encountered in applying ILs to meet the demanding requirements in CO2 separation processes, there is a need to reconsider what role (if any) ILs might play in CO2 capture technologies. Ultimately, more promising and robust materials will not come from ILs themselves, but from retrosynthetic analysis and a reconsideration of which structural variables and properties are (and are not) important. The hybridization of the constituent parts into entirely new, yet seemingly familiar substances, can yield greatly improved properties and economics. This manuscript highlights recent work from our group based on lessons learned from ILs that have spurred the development of new amine solvents and polymer materials to better address the demanding process conditions and requirements of CO2 capture and related separations.

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Copyright
Copyright © Materials Research Society 2016 

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