Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]

Knipe, Jennifer M.; Chavez, Kathya P.; Hornbostel, Katherine M.; Worthington, Matthew A.; Nguyen, Du T.; Ye, Congwang; Bourcier, William L.; Baker, Sarah E.; Brennecke, Joan F.; Stolaroff, Joshuah K.

doi:10.1021/acs.est.8b06442

Title: Evaluating the Performance of Micro-Encapsulated CO ₂ Sorbents during CO ₂ Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]

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Abstract

We encapsulated six solvents with novel physical and chemical properties for CO₂ sorption within gas-permeable polymer shells, creating Micro-Encapsulated CO₂ Sorbents (MECS), to improve the CO₂ absorption kinetics and handling of the solvents for postcombustion CO₂ capture from flue gas. The solvents were sodium carbonate (Na2CO3) solution, uncatalyzed and with two different promoters, two ionic liquid (IL) solvents, and one CO₂-binding organic liquid (CO₂BOL). We subjected each of the six MECS to multiple CO₂ absorption and regeneration cycles and measured the working CO₂ absorption capacity as a function of time to identify promising candidate MECS for large-scale carbon capture. We discovered that the uncatalyzed Na₂CO₃ and Na₂CO₃-sarcosine MECS had lower CO₂ absorption rates relative to Na₂CO₃-cyclen MECS over 30 min of absorption, while the CO₂BOL Koechanol appeared to permeate through the capsule shell and is thus unsuitable. Here, we rigorously tested the most promising three MECS (Na₂CO₃-cyclen, IL NDIL0309, and IL NDIL0230) by subjecting each of them to a series of 10 absorption/stripping cycles. The CO₂ absorption curves were highly reproducible for these three MECS across 10 cycles, demonstrating successful absorption/regeneration without degradation. As the CO₂ absorption rate is dynamic in time and the CO₂ loading per mass varies amongmore »« less

Authors:

^[1]; Chavez, Kathya P. ^[2]; Hornbostel, Katherine M. ^[3]; Worthington, Matthew A. ^[1]; Nguyen, Du T. ^[1]; Ye, Congwang ^[1]; Bourcier, William L. ^[1]; Baker, Sarah E. ^[1];

^[4]; Stolaroff, Joshuah K. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of Illinois, Chicago, IL (United States)
Univ. of Pittsburgh, PA (United States)
Univ. of Texas, Austin, TX (United States)

Publication Date:: Wed Feb 13 00:00:00 EST 2019

Research Org.:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE Office of Fossil Energy (FE)

OSTI Identifier:: 1515329

Report Number(s):: LLNL-JRNL-746767
Journal ID: ISSN 0013-936X; 931464

Grant/Contract Number:: AC52-07NA27344; FE0026465

Resource Type:: Accepted Manuscript

Journal Name:: Environmental Science and Technology

Additional Journal Information:: Journal Volume: 53; Journal Issue: 5; Journal ID: ISSN 0013-936X

Publisher:: American Chemical Society (ACS)

Country of Publication:: United States

Language:: English

Subject:: 54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Knipe, Jennifer M., Chavez, Kathya P., Hornbostel, Katherine M., Worthington, Matthew A., Nguyen, Du T., Ye, Congwang, Bourcier, William L., Baker, Sarah E., Brennecke, Joan F., and Stolaroff, Joshuah K. Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)].  United States: N. p., 2019. 
Web.  doi:10.1021/acs.est.8b06442.

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                    Knipe, Jennifer M., Chavez, Kathya P., Hornbostel, Katherine M., Worthington, Matthew A., Nguyen, Du T., Ye, Congwang, Bourcier, William L., Baker, Sarah E., Brennecke, Joan F., & Stolaroff, Joshuah K. Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)].  United States.  https://doi.org/10.1021/acs.est.8b06442

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                    Knipe, Jennifer M., Chavez, Kathya P., Hornbostel, Katherine M., Worthington, Matthew A., Nguyen, Du T., Ye, Congwang, Bourcier, William L., Baker, Sarah E., Brennecke, Joan F., and Stolaroff, Joshuah K. Wed .  
"Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]".  United States.  https://doi.org/10.1021/acs.est.8b06442.  https://www.osti.gov/servlets/purl/1515329.

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@article{osti_1515329,

  title        = {Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]},

  author       = {Knipe, Jennifer M. and Chavez, Kathya P. and Hornbostel, Katherine M. and Worthington, Matthew A. and Nguyen, Du T. and Ye, Congwang and Bourcier, William L. and Baker, Sarah E. and Brennecke, Joan F. and Stolaroff, Joshuah K.},

  abstractNote = {We encapsulated six solvents with novel physical and chemical properties for CO2 sorption within gas-permeable polymer shells, creating Micro-Encapsulated CO2 Sorbents (MECS), to improve the CO2 absorption kinetics and handling of the solvents for postcombustion CO2 capture from flue gas. The solvents were sodium carbonate (Na2CO3) solution, uncatalyzed and with two different promoters, two ionic liquid (IL) solvents, and one CO2-binding organic liquid (CO2BOL). We subjected each of the six MECS to multiple CO2 absorption and regeneration cycles and measured the working CO2 absorption capacity as a function of time to identify promising candidate MECS for large-scale carbon capture. We discovered that the uncatalyzed Na2CO3 and Na2CO3-sarcosine MECS had lower CO2 absorption rates relative to Na2CO3-cyclen MECS over 30 min of absorption, while the CO2BOL Koechanol appeared to permeate through the capsule shell and is thus unsuitable. Here, we rigorously tested the most promising three MECS (Na2CO3-cyclen, IL NDIL0309, and IL NDIL0230) by subjecting each of them to a series of 10 absorption/stripping cycles. The CO2 absorption curves were highly reproducible for these three MECS across 10 cycles, demonstrating successful absorption/regeneration without degradation. As the CO2 absorption rate is dynamic in time and the CO2 loading per mass varies among the three most promising MECS, the process design parameters will ultimately dictate the selection of MECS solvent.},

  doi          = {10.1021/acs.est.8b06442},

  journal      = {Environmental Science and Technology},

  number       = 5,

  volume       = 53,

  place        = {United States},

  year         = {Wed Feb 13 00:00:00 EST 2019},

  month        = {Wed Feb 13 00:00:00 EST 2019}

}

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Title: Evaluating the Performance of Micro-Encapsulated CO 2 Sorbents during CO 2 Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]

Abstract

Citation Formats

Title: Evaluating the Performance of Micro-Encapsulated CO ₂ Sorbents during CO ₂ Absorption and Regeneration Cycling [CO2 Absorption and Regeneration Cycling with Micro-Encapsulated CO2 Sorbents (MECS)]