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

被引：0
|
作者：
Zhao, Xingyao [1 ]
Chang, Xiaotong [1 ]
Qin, Caixian [1 ]
Wang, Xiaokang [1 ]
Xu, Mingming [1 ]
Fan, Weidong [1 ]
Meng, Qingguo [2 ]
Sun, Daofeng [1 ]
机构：
[1] China Univ Petr East China, Sch Mat Sci & Engn, Qingdao 266580, Peoples R China
[2] Weifang Univ, Coll Chem Engn & Environm Chem, Weifang 261061, Peoples R China
来源：
MOLECULES | 2025年 / 30卷 / 05期
基金：
中国国家自然科学基金;
关键词：
metal-organic framework; C2H2/CO2; separation; CO2/CH4; NATURAL-GAS; BIOGAS;
D O I：
10.3390/molecules30051171
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
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 x 7.1 and 8.3 x 5.2 & Aring;(2). 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 x 5.7 and 7.4 x 3.9 & Aring;(2). Reversible N-2 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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页数：15
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