TY - JOUR
T1 - Polyvinylamine-loaded metal–organic framework MIL-101 for effective and selective CO2 adsorption under atmospheric or lower pressure
AU - Shin, Subin
AU - Yoo, Dong Kyu
AU - Bae, Youn Sang
AU - Jhung, Sung Hwa
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - Recently, selective removal of CO2 from offgas of various industries is very important, and metal–organic frameworks (MOFs) have been actively studied as a potential adsorbent. In this study, a typical MOF with a high porosity, MIL-101, was modified by loading (via ship in a bottle technique) basic polymer, polyvinylamine (PVAm), for the first time, in order to improve the performances of MIL-101 in adsorption/capture of CO2 from offgas. The obtained PVAm@MIL-101 showed highly increased selectivity (CO2/N2) and capacity in CO2 adsorption under low pressure, when suitable quantity of PVAm was introduced. Or, the adsorption selectivity and capacity of PVAm(0.7)@MIL-101 were around 11 and 2.5 times to those of pristine MIL-101, respectively at 298 K. Moreover, the PVAm(0.7)@MIL-101 was readily recycled for continuous uses and had optimum isosteric heat of adsorption (−ΔHads = 35–50 kJ/mol) for a wide range of CO2 adsorption. Therefore, loading PVAm into porous MOFs can be recommended as an attractive way to improve the performances of the MOFs in CO2 adsorption/capture from offgas under low pressure.
AB - Recently, selective removal of CO2 from offgas of various industries is very important, and metal–organic frameworks (MOFs) have been actively studied as a potential adsorbent. In this study, a typical MOF with a high porosity, MIL-101, was modified by loading (via ship in a bottle technique) basic polymer, polyvinylamine (PVAm), for the first time, in order to improve the performances of MIL-101 in adsorption/capture of CO2 from offgas. The obtained PVAm@MIL-101 showed highly increased selectivity (CO2/N2) and capacity in CO2 adsorption under low pressure, when suitable quantity of PVAm was introduced. Or, the adsorption selectivity and capacity of PVAm(0.7)@MIL-101 were around 11 and 2.5 times to those of pristine MIL-101, respectively at 298 K. Moreover, the PVAm(0.7)@MIL-101 was readily recycled for continuous uses and had optimum isosteric heat of adsorption (−ΔHads = 35–50 kJ/mol) for a wide range of CO2 adsorption. Therefore, loading PVAm into porous MOFs can be recommended as an attractive way to improve the performances of the MOFs in CO2 adsorption/capture from offgas under low pressure.
KW - Adsorption
KW - CO
KW - Metal organic frameworks
KW - MIL-101
KW - Polyvinylamine
UR - http://www.scopus.com/inward/record.url?scp=85075436192&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2019.123429
DO - 10.1016/j.cej.2019.123429
M3 - Article
AN - SCOPUS:85075436192
SN - 1385-8947
VL - 389
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 123429
ER -