Extraordinarily selective adsorption of CO2 over N2 in a polyethyleneimine-impregnated NU-1000 material

Jo Hong Kang; Tae Ung Yoon; Seo Yul Kim; Min Bum Kim; Hyung Ju Kim; Hee Chul Yang; Youn Sang Bae

doi:10.1016/j.micromeso.2019.03.001

Extraordinarily selective adsorption of CO₂ over N₂ in a polyethyleneimine-impregnated NU-1000 material

Jo Hong Kang, Tae Ung Yoon, Seo Yul Kim, Min Bum Kim, Hyung Ju Kim, Hee Chul Yang, Youn Sang Bae

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Developing an efficient adsorbent for selective separation and capture of CO₂ from CO₂/N₂ mixture is an important and challenging issue for mitigating global warming. In this study, we posited that high CO₂/N₂ selectivity could be obtained by impregnating polyethyleneimine (PEI) within the pores of NU-1000, a zirconium-based metal-organic framework (MOF), since it has a high surface area (∼2320 m²/g) and free and exposed –OH groups but does not have unsaturated metal sites possibly having strong interactions with N₂ molecules. A series of PEI-impregnated NU-1000 (PEI(x)@NU-1000) materials with varied PEI loadings have been successfully prepared. As reasoned, PEI(50)@NU-1000 showed the highest CO₂/N₂ selectivity among the PEI-loaded adsorbents in the literature under similar conditions. Remarkably, it exhibited extremely high CO₂/N₂ selectivities (∼8000) at low pressures and a very high CO₂/N₂ selectivity (661) at a typical pressure of flue gas (1 bar). Furthermore, PEI(50)@NU-1000 could efficiently separate CO₂/N₂ mixture under a dynamic flow condition and maintained its CO₂ uptakes during three consecutive adsorption and desorption.

Original language	English
Pages (from-to)	84-91
Number of pages	8
Journal	Microporous and Mesoporous Materials
Volume	281
DOIs	https://doi.org/10.1016/j.micromeso.2019.03.001
Publication status	Published - 2019 Jun

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044).

Funding Information:
This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256 ). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011 ) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044 ).

Publisher Copyright:
© 2019 Elsevier Inc.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials

Access to Document

10.1016/j.micromeso.2019.03.001

Cite this

@article{840bdb5fe6fd4fd6a96482243262ad5d,

title = "Extraordinarily selective adsorption of CO2 over N2 in a polyethyleneimine-impregnated NU-1000 material",

abstract = "Developing an efficient adsorbent for selective separation and capture of CO2 from CO2/N2 mixture is an important and challenging issue for mitigating global warming. In this study, we posited that high CO2/N2 selectivity could be obtained by impregnating polyethyleneimine (PEI) within the pores of NU-1000, a zirconium-based metal-organic framework (MOF), since it has a high surface area (∼2320 m2/g) and free and exposed –OH groups but does not have unsaturated metal sites possibly having strong interactions with N2 molecules. A series of PEI-impregnated NU-1000 (PEI(x)@NU-1000) materials with varied PEI loadings have been successfully prepared. As reasoned, PEI(50)@NU-1000 showed the highest CO2/N2 selectivity among the PEI-loaded adsorbents in the literature under similar conditions. Remarkably, it exhibited extremely high CO2/N2 selectivities (∼8000) at low pressures and a very high CO2/N2 selectivity (661) at a typical pressure of flue gas (1 bar). Furthermore, PEI(50)@NU-1000 could efficiently separate CO2/N2 mixture under a dynamic flow condition and maintained its CO2 uptakes during three consecutive adsorption and desorption.",

author = "Kang, {Jo Hong} and Yoon, {Tae Ung} and Kim, {Seo Yul} and Kim, {Min Bum} and Kim, {Hyung Ju} and Yang, {Hee Chul} and Bae, {Youn Sang}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044). Funding Information: This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256 ). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011 ) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044 ). Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2019",

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doi = "10.1016/j.micromeso.2019.03.001",

language = "English",

volume = "281",

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T1 - Extraordinarily selective adsorption of CO2 over N2 in a polyethyleneimine-impregnated NU-1000 material

AU - Kang, Jo Hong

AU - Yoon, Tae Ung

AU - Kim, Seo Yul

AU - Kim, Min Bum

AU - Kim, Hyung Ju

AU - Yang, Hee Chul

AU - Bae, Youn Sang

N1 - Funding Information: This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044). Funding Information: This work was supported by the National Research Foundation of Korea grants funded by the Korea government (MSIP) (Nos. NRF-2018M2A8A5023391 and NRF-2016R1A2B4014256 ). This work has been also conducted with the supports of the Korea Institute of Industrial Technology (Project No.: EO-19-0011 ) and the Korea Energy Technology Evaluation and Planning (Project No.: NS-18-0044 ). Publisher Copyright: © 2019 Elsevier Inc.

PY - 2019/6

Y1 - 2019/6

N2 - Developing an efficient adsorbent for selective separation and capture of CO2 from CO2/N2 mixture is an important and challenging issue for mitigating global warming. In this study, we posited that high CO2/N2 selectivity could be obtained by impregnating polyethyleneimine (PEI) within the pores of NU-1000, a zirconium-based metal-organic framework (MOF), since it has a high surface area (∼2320 m2/g) and free and exposed –OH groups but does not have unsaturated metal sites possibly having strong interactions with N2 molecules. A series of PEI-impregnated NU-1000 (PEI(x)@NU-1000) materials with varied PEI loadings have been successfully prepared. As reasoned, PEI(50)@NU-1000 showed the highest CO2/N2 selectivity among the PEI-loaded adsorbents in the literature under similar conditions. Remarkably, it exhibited extremely high CO2/N2 selectivities (∼8000) at low pressures and a very high CO2/N2 selectivity (661) at a typical pressure of flue gas (1 bar). Furthermore, PEI(50)@NU-1000 could efficiently separate CO2/N2 mixture under a dynamic flow condition and maintained its CO2 uptakes during three consecutive adsorption and desorption.

AB - Developing an efficient adsorbent for selective separation and capture of CO2 from CO2/N2 mixture is an important and challenging issue for mitigating global warming. In this study, we posited that high CO2/N2 selectivity could be obtained by impregnating polyethyleneimine (PEI) within the pores of NU-1000, a zirconium-based metal-organic framework (MOF), since it has a high surface area (∼2320 m2/g) and free and exposed –OH groups but does not have unsaturated metal sites possibly having strong interactions with N2 molecules. A series of PEI-impregnated NU-1000 (PEI(x)@NU-1000) materials with varied PEI loadings have been successfully prepared. As reasoned, PEI(50)@NU-1000 showed the highest CO2/N2 selectivity among the PEI-loaded adsorbents in the literature under similar conditions. Remarkably, it exhibited extremely high CO2/N2 selectivities (∼8000) at low pressures and a very high CO2/N2 selectivity (661) at a typical pressure of flue gas (1 bar). Furthermore, PEI(50)@NU-1000 could efficiently separate CO2/N2 mixture under a dynamic flow condition and maintained its CO2 uptakes during three consecutive adsorption and desorption.

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