Volume 135, Issue 12 e202218590
Forschungsartikel

Scalable Green Synthesis of Robust Ultra-Microporous Hofmann Clathrate Material with Record C3H6 Storage Density for Efficient C3H6/C3H8 Separation

Di Liu

Di Liu

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

These authors contributed equally to this work.

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Jiyan Pei

Jiyan Pei

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

These authors contributed equally to this work.

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Prof. Xu Zhang

Prof. Xu Zhang

School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian, 223300 China

These authors contributed equally to this work.

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Xiao-Wen Gu

Xiao-Wen Gu

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Hui-Min Wen

Prof. Hui-Min Wen

College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014 China

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Prof. Banglin Chen

Corresponding Author

Prof. Banglin Chen

Fujian Provincial Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007 China

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Prof. Guodong Qian

Prof. Guodong Qian

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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Prof. Bin Li

Corresponding Author

Prof. Bin Li

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027 China

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First published: 24 January 2023
Citations: 1

Abstract

Developing porous materials for C3H6/C3H8 separation faces the challenge of merging excellent separation performance with high stability and easy scalability of synthesis. Herein, we report a robust Hofmann clathrate material (ZJU-75a), featuring high-density strong binding sites to achieve all the above requirements. ZJU-75a adsorbs large amount of C3H6 with a record high storage density of 0.818 g mL−1, and concurrently shows high C3H6/C3H8 selectivity (54.2) at 296 K and 1 bar. Single-crystal structure analysis unveil that the high-density binding sites in ZJU-75a not only provide much stronger interactions with C3H6 but also enable the dense packing of C3H6. Breakthrough experiments on gas mixtures afford both high separation factor of 14.7 and large C3H6 uptake (2.79 mmol g−1). This material is highly stable and can be easily produced at kilogram-scale using a green synthesis method, making it as a benchmark material to address major challenges for industrial C3H6/C3H8 separation.

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 Supporting Information of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.