Volume 64, Issue 28 e202505978
Research Article

Synthesis and Modification of Formate Zr-MOF (ZrFA) Toward Scalable and Cost-Cutting Gas Separation

Dr. Xiao-Hong Xiong

Dr. Xiao-Hong Xiong

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

Department of Chemistry and Chemical Engineering, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063 China

Both authors contributed equally to this work.

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Liang Song

Liang Song

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

Both authors contributed equally to this work.

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Wei Wang

Wei Wang

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Xiao-Yan Zhu

Xiao-Yan Zhu

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Liu-Li Meng

Liu-Li Meng

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Hui-Ting Zheng

Hui-Ting Zheng

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

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Prof. Dr. Zhang-Wen Wei

Corresponding Author

Prof. Dr. Zhang-Wen Wei

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

E-mail: [email protected], [email protected], [email protected]

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Dr. Li-Lin Tan

Corresponding Author

Dr. Li-Lin Tan

Chemistry and Chemical Engineering Guangdong Laboratory, Guangzhou, 510275 China

E-mail: [email protected], [email protected], [email protected]

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Prof. Dr. Xiao-Chun Huang

Prof. Dr. Xiao-Chun Huang

Department of Chemistry and Chemical Engineering, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou, 515063 China

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Prof. Dr. Cheng-Yong Su

Corresponding Author

Prof. Dr. Cheng-Yong Su

MOE Laboratory of Bioinorganic and Synthetic Chemistry, GBRCE for Functional Molecular Engineering, LIFM, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275 China

E-mail: [email protected], [email protected], [email protected]

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First published: 02 May 2025

Graphical Abstract

A synthetic protocol was developed to scale up ultramicroporous Zr-MOFs with simple formate, enabling one-step direct separation of C2H4 from the binary C2H2/C2H4 or ternary C2H2/CO2/C2H4 gas mixtures with high separation efficiency and cost-saving preparation.

Abstract

The mass production of metal-organic frameworks (MOFs) with affordable cost is highly demanding yet limited for commercial applications, e.g., purification of polymer-grade ethylene (C2H4) via acetylene (C2H2) and carbon dioxide (CO2) removal faces the challenge of developing low-cost and large-scale physisorbents with efficiency and recyclability. Herein, we developed a viable synthetic protocol to scale-up a series of ultramicroporous Zr-MOFs (ZrFA/ZrFA-D/ZrFA-D-Cu(I)) with the simplest monocarboxylate, formate (FA), through consecutive production by recycling solvent/modulator. Besides a size-exclusion effect disfavoring C2H4 adsorption, introduction of defective and Cu(I) sites was found to enhance gas affinity and uptake capacity. A comprehensive evaluation of C2H4 separation and economic efficiency has been proposed, suggesting the improvement of C2H2 uptake capacity is effective for the binary C2H2/C2H4 separation, while the separation process of the ternary C2H2/CO2/C2H4 mixtures depends on subtle tradeoff of complex factors and limited by challenging CO2/C2H4 separating. Notably, the large-scale separation has been testified to significantly improve separation efficiency, and the low-cost preparation benefits high economic efficiency. The distinct C2H2/C2H4/CO2 adsorption mechanism in ZrFA/ZrFA-D/ZrFA-D-Cu(I) has been elucidated by the theoretical calculations. This work may shed a light on the future C2H4 purification technology by pushing MOF-syntheses toward low-cost, scale-up, and recyclable production.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article. Deposition Numbers 2127436 contains the supplementary crystallographic data for this paper. These data can be obtained free of charge via the joint Cambridge Crystallographic Data Centre (CCDC) and Fachinformationszentrum Karlsruhe Access Structures service.

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