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

Research output: Contribution to journalArticle

3 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 languageEnglish
Pages (from-to)84-91
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume281
DOIs
Publication statusPublished - 2019 Jun

Fingerprint

Polyethyleneimine
Adsorbents
selectivity
Adsorption
adsorption
Global warming
Metals
adsorbents
Flue gases
Zirconium
Desorption
impregnating
Molecules
flue gases
global warming
metals
low pressure
desorption
porosity
molecules

All Science Journal Classification (ASJC) codes

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

Cite this

Kang, Jo Hong ; Yoon, Tae Ung ; Kim, Seo Yul ; Kim, Min Bum ; Kim, Hyung Ju ; Yang, Hee Chul ; Bae, Youn Sang. / Extraordinarily selective adsorption of CO2 over N2 in a polyethyleneimine-impregnated NU-1000 material. In: Microporous and Mesoporous Materials. 2019 ; Vol. 281. pp. 84-91.
@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}",
year = "2019",
month = "6",
doi = "10.1016/j.micromeso.2019.03.001",
language = "English",
volume = "281",
pages = "84--91",
journal = "Microporous and Mesoporous Materials",
issn = "1387-1811",
publisher = "Elsevier",

}

Extraordinarily selective adsorption of CO2 over N2 in a polyethyleneimine-impregnated NU-1000 material. / Kang, Jo Hong; Yoon, Tae Ung; Kim, Seo Yul; Kim, Min Bum; Kim, Hyung Ju; Yang, Hee Chul; Bae, Youn Sang.

In: Microporous and Mesoporous Materials, Vol. 281, 06.2019, p. 84-91.

Research output: Contribution to journalArticle

TY - JOUR

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

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.

UR - http://www.scopus.com/inward/record.url?scp=85062696029&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85062696029&partnerID=8YFLogxK

U2 - 10.1016/j.micromeso.2019.03.001

DO - 10.1016/j.micromeso.2019.03.001

M3 - Article

AN - SCOPUS:85062696029

VL - 281

SP - 84

EP - 91

JO - Microporous and Mesoporous Materials

JF - Microporous and Mesoporous Materials

SN - 1387-1811

ER -