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Title: Enhancements in mass transfer for carbon capture solvents part I: Homogeneous catalyst

The novel small molecule carbonic anhydrase (CA) mimic [Co III(Salphen-COO -)Cl]HNEt 3 ( 1), was synthesized as an additive for increasing CO 2 absorption rates in amine-based post-combustion carbon capture processes (CCS), and its efficacy was verified. 1 was designed for use in a kinetically slow but thermally stable blended solvent, containing the primary amines 1-amino-2-propanol (A2P) and 2-amino-2-methyl-1-propanol (AMP). Together, the A2P/AMP solvent and 1 reduce the overall energy penalty associated with CO 2 capture from coal-derived flue gas, relative to the baseline solvent MEA. 1 is also effective at increasing absorption kinetics of kinetically fast solvents, such as MEA, which can reduce capital costs by requiring a smaller absorber tower. The transition from catalyst testing under idealized laboratory conditions, to process relevant lab- and bench-scale testing adds many additional variables that are not well understood and rarely discussed. As a result, the stepwise testing of both 1 and the novel A2P/AMP solvent blend is described through a transition process that identifies many of these process and evaluation challenges not often addressed when designing a chemical or catalytic additive for industrial CCS systems, where consideration of solvent chemistry is typically the primary goal.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
Publication Date:
Grant/Contract Number:
FE0012926
Type:
Accepted Manuscript
Journal Name:
International Journal of Greenhouse Gas Control
Additional Journal Information:
Journal Volume: 63; Journal Issue: C; Journal ID: ISSN 1750-5836
Publisher:
Elsevier
Research Org:
Univ. of Kentucky, Lexington, KY (United States). Center for Applied Energy Research
Sponsoring Org:
USDOE Office of Fossil Energy (FE)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; Post-combustion; CO2 capture; Mass transfer; Amine; Catalyst; Additives
OSTI Identifier:
1362045

Widger, Leland R., Sarma, Moushumi, Bryant, Jonathan J., Mannel, David S., Thompson, Jesse G., Lippert, Cameron A., and Liu, Kunlei. Enhancements in mass transfer for carbon capture solvents part I: Homogeneous catalyst. United States: N. p., Web. doi:10.1016/j.ijggc.2017.05.019.
Widger, Leland R., Sarma, Moushumi, Bryant, Jonathan J., Mannel, David S., Thompson, Jesse G., Lippert, Cameron A., & Liu, Kunlei. Enhancements in mass transfer for carbon capture solvents part I: Homogeneous catalyst. United States. doi:10.1016/j.ijggc.2017.05.019.
Widger, Leland R., Sarma, Moushumi, Bryant, Jonathan J., Mannel, David S., Thompson, Jesse G., Lippert, Cameron A., and Liu, Kunlei. 2017. "Enhancements in mass transfer for carbon capture solvents part I: Homogeneous catalyst". United States. doi:10.1016/j.ijggc.2017.05.019. https://www.osti.gov/servlets/purl/1362045.
@article{osti_1362045,
title = {Enhancements in mass transfer for carbon capture solvents part I: Homogeneous catalyst},
author = {Widger, Leland R. and Sarma, Moushumi and Bryant, Jonathan J. and Mannel, David S. and Thompson, Jesse G. and Lippert, Cameron A. and Liu, Kunlei},
abstractNote = {The novel small molecule carbonic anhydrase (CA) mimic [CoIII(Salphen-COO-)Cl]HNEt3 (1), was synthesized as an additive for increasing CO2 absorption rates in amine-based post-combustion carbon capture processes (CCS), and its efficacy was verified. 1 was designed for use in a kinetically slow but thermally stable blended solvent, containing the primary amines 1-amino-2-propanol (A2P) and 2-amino-2-methyl-1-propanol (AMP). Together, the A2P/AMP solvent and 1 reduce the overall energy penalty associated with CO2 capture from coal-derived flue gas, relative to the baseline solvent MEA. 1 is also effective at increasing absorption kinetics of kinetically fast solvents, such as MEA, which can reduce capital costs by requiring a smaller absorber tower. The transition from catalyst testing under idealized laboratory conditions, to process relevant lab- and bench-scale testing adds many additional variables that are not well understood and rarely discussed. As a result, the stepwise testing of both 1 and the novel A2P/AMP solvent blend is described through a transition process that identifies many of these process and evaluation challenges not often addressed when designing a chemical or catalytic additive for industrial CCS systems, where consideration of solvent chemistry is typically the primary goal.},
doi = {10.1016/j.ijggc.2017.05.019},
journal = {International Journal of Greenhouse Gas Control},
number = C,
volume = 63,
place = {United States},
year = {2017},
month = {6}
}