Solvent Regulation in Layered Zn-MOFs for C₂H₂/CO₂ and CO₂/CH₄ Separation.

IF 4.2 2区化学 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY

Molecules Pub Date : 2025-03-05 DOI:10.3390/molecules30051171

Xingyao Zhao, Xiaotong Chang, Caixian Qin, Xiaokang Wang, Mingming Xu, Weidong Fan, Qingguo Meng, Daofeng Sun

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引用次数: 0

Abstract

The development of alternative adsorptive separation technologies is extremely significant for the separation of C₂H₂/CO₂ and CO₂/CH₄ in the chemical industry. Emerging metal-organic frameworks (MOFs) have shown great potential as adsorbents for gas adsorption and separation. Herein, we synthesized two layered Zn-MOFs, UPC-96 and UPC-97, with 1,2,4,5-tetrakis(4-carboxyphenyl)-3,6-dimethylbenzene (TCPB-Me) as a ligand via the solvent regulation of the pH values. UPC-96 with a completely deprotonated ligand was obtained without the addition of acid, exhibiting two different channels with cross-sectional sizes of 11.6 × 7.1 and 8.3 × 5.2 Å². In contrast, the addition of acid led to the partial deprotonation of the ligand and afforded UPC-97 two types of channels with cross-sectional sizes of 11.5 × 5.7 and 7.4 × 3.9 Å². Reversible N₂ adsorption isotherms at 77 K confirmed their permanent porosity, and the differentiated single-component C₂H₂, CO₂, and CH₄ adsorption isotherms indicated their potential in C₂H₂/CO₂ and CO₂/CH₄ separation.

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来源期刊

Molecules 化学-有机化学

CiteScore

7.40

自引率

8.70%

发文量

7524

审稿时长

1.4 months

期刊介绍： Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.