Citation: Nan Lu, Lan Lan, Qiang Gao, Ming Liu, Tong-Liang Hu, Na Li, Xian-He Bu. Delicate pore environment regulation in pillar–layered metal–organic frameworks for enhanced C₂H₂/CO₂ separation[J]. Chinese Chemical Letters, ;2026, 37(6): 110887. doi: 10.1016/j.cclet.2025.110887 shu

Delicate pore environment regulation in pillar–layered metal–organic frameworks for enhanced C₂H₂/CO₂ separation

Nan Lu ^a ,
Lan Lan ^a ,
Qiang Gao ^{d, *,} ,
Ming Liu ^a ,
Tong-Liang Hu ^a ,
Na Li ^{b, c, *,} ,
Xian-He Bu ^{a, b}

a.
School of Materials Science and Engineering, Nankai University, Tianjin 300350, China
b.
State Key Laboratory of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, China
c.
Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China
d.
School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China

gaoq@just.edu.cn

lina@nankai.edu.cn

Received Date: 6 October 2024
Revised Date: 14 January 2025
Accepted Date: 19 January 2025
Available Online: 20 January 2025

Figures(5)

Controlling gas sorption via pore environment regulation is of significance yet challenging in the adsorption and separation process. Herein, we report a pillar modification strategy in the pillar–layered metal–organic frameworks for enhancing C₂H₂/CO₂ separation by controlling host-guest interactions. Altering pillars from aromatic ligand to aliphatic ligand in the prototype MOF (Ni-MOF-1) not only manufactures an aliphatic pore environment conducive to generate multiple van der Waals interactions with C₂H₂ but also increases adsorption sites for C₂H₂ verified by theoretical calculations. The pore environment optimized Ni-MOF-2 exhibits 3.5-fold enhanced equimolar C₂H₂/CO₂ selectivity and practical separation performance evidenced by dynamic breakthrough experiments. This work provides an example for the in-depth investigation of delicate pore environment regulation and offers an alternative for the C₂H₂/CO₂ separation.
- Metal–organic framework,
- Pillar–layered strategy,
- Adsorption and separation,
- Pore environment regulation,
- C₂H₂/CO₂ separation
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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Delicate pore environment regulation in pillar–layered metal–organic frameworks for enhanced C2H2/CO2 separation

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通讯作者: 陈斌, bchen63@163.com

Delicate pore environment regulation in pillar–layered metal–organic frameworks for enhanced C₂H₂/CO₂ separation