Volume 62, Issue 8 e202217662
Research Article

Highly Robust Microporous Metal-Organic Frameworks for Efficient Ethylene Purification under Dry and Humid Conditions

Wansheng Liu

Wansheng Liu

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Shubo Geng

Shubo Geng

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Ning Li

Ning Li

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Sa Wang

Sa Wang

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Shuping Jia

Shuping Jia

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Fazheng Jin

Fazheng Jin

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Ting Wang

Ting Wang

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Katherine A. Forrest

Katherine A. Forrest

Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 USA

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Prof. Tony Pham

Prof. Tony Pham

Department of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 USA

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Prof. Peng Cheng

Prof. Peng Cheng

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071 China

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Prof. Yao Chen

Prof. Yao Chen

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

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Prof. Jian-Gong Ma

Prof. Jian-Gong Ma

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071 China

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Prof. Zhenjie Zhang

Corresponding Author

Prof. Zhenjie Zhang

State Key Laboratory of Medicinal Chemical biology, College of Chemistry, Nankai University, Tianjin, 300071 China

Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Renewable Energy Conversion and Storage Center, Frontiers Science Center for New Organic Matter, Nankai University, Tianjin, 300071 China

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First published: 31 December 2022
Citations: 14

Graphical Abstract

Two highly robust microporous metal–organic frameworks with high ethane uptake and selectivity, ultrahigh water stability, high chemical stability, and low ethane/ethene adsorption enthalpy were designed and synthesized, which could realize one-step C2H4 purification from binary C2H6/C2H4 mixtures under both dry and humid conditions.

Abstract

Two C2H6-selective metal-organic framework (MOF) adsorbents with ultrahigh stability, high surface areas, and suitable pore size have been designed and synthesized for one-step separation of ethane/ethylene (C2H6/C2H4) under humid conditions to produce polymer-grade pure C2H4. Experimental results reveal that these two MOFs not only adsorb a high amount of C2H6 but also display good C2H6/C2H4 selectivity verified by fixed bed column breakthrough experiments. Most importantly, the good water stability and hydrophobic pore environments make these two MOFs capable of efficiently separating C2H6/C2H4 under humid conditions, exhibiting the benchmark performance among all reported adsorbents for separation of C2H6/C2H4 under humid conditions. Moreover, the affinity sites and their static adsorption energies were successfully revealed by single crystal data and computation studies. Adsorbents described in this work can be used to address major chemical industrial challenges.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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