Recent Advances in Poly(ionic liquids) Membranes for CO2 Separation

TY - JOUR

T1 - Recent Advances in Poly(ionic liquids) Membranes for CO2 Separation

AU - Zhang, Manman

AU - Semiat, Raphael

AU - He, Xuezhong

N1 - Funding Information: The authors would like to acknowledge the Startup funding from Guangdong Technion Israel Institute of Technology for supporting this work. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/7/25

Y1 - 2022/7/25

N2 - Developing energy-efficient and environmentally friendly technologies are particularly crucial for CO2 separations from flue gas, natural gas, and syngas. Membranes made from functionalized poly(ionic liquids) (PILs) have recently attracted great attention for gas separations, but few systematic reviews from the material preparation to their applications have been reported. Therefore, the latest progress in the preparation of different types of PIL-based membranes such as pure PIL membranes, PIL copolymer membranes, PIL/IL composite membranes, and PIL-based mixed matrix membranes (MMMs) have been critically discussed in this work. It was found that PIL/IL composite membranes and MMMs may have a better opportunity for industrial CO2 separations if gas permeability can be further improved. In the end, the perspective for the development of more efficient membranes based on the understanding of the structure-property relationship of PILs with separation performance was also proposed. Moreover, the separation performance of PIL-based membranes should be further evaluated in terms of techno-economic feasibility and environmental impact analysis.

AB - Developing energy-efficient and environmentally friendly technologies are particularly crucial for CO2 separations from flue gas, natural gas, and syngas. Membranes made from functionalized poly(ionic liquids) (PILs) have recently attracted great attention for gas separations, but few systematic reviews from the material preparation to their applications have been reported. Therefore, the latest progress in the preparation of different types of PIL-based membranes such as pure PIL membranes, PIL copolymer membranes, PIL/IL composite membranes, and PIL-based mixed matrix membranes (MMMs) have been critically discussed in this work. It was found that PIL/IL composite membranes and MMMs may have a better opportunity for industrial CO2 separations if gas permeability can be further improved. In the end, the perspective for the development of more efficient membranes based on the understanding of the structure-property relationship of PILs with separation performance was also proposed. Moreover, the separation performance of PIL-based membranes should be further evaluated in terms of techno-economic feasibility and environmental impact analysis.

KW - Poly(ionic liquids)

KW - CO2 separation

KW - Permeability

KW - Composite membranes

KW - Flue gas

UR - http://www.scopus.com/inward/record.url?scp=85134853918&partnerID=8YFLogxK

U2 - 10.1016/j.seppur.2022.121784

DO - 10.1016/j.seppur.2022.121784

M3 - Review article

AN - SCOPUS:85134853918

SN - 1383-5866

VL - 299

JO - Separation and Purification Technology

JF - Separation and Purification Technology

M1 - 121784

ER -