A Series of Mesoporous Metal-Organic Frameworks with Tunable Windows Sizes and Exceptionally High Ethane over Ethylene Adsorption Selectivity

被引：114
作者：
Lysova, Anna A. [1 ,2 ]
Samsonenko, Denis G. [1 ,2 ]
Kovalenko, Konstantin A. [1 ,2 ]
Nizovtsev, Anton S. [1 ,2 ]
Dybtsev, Danil N. [1 ,2 ]
Fedin, Vladimir P. [1 ,2 ]
机构：
[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Acad Lavrentiev Ave 3, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Pirogova Str 2, Novosibirsk 630090, Russia
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2020年 / 59卷 / 46期
基金：
俄罗斯科学基金会; 俄罗斯基础研究基金会;
关键词：
adsorption; alkanes; alkenes; mesoporous materials; metal-organic frameworks; COORDINATION FRAMEWORK; BASIS-SETS; SEPARATION; MOFS; HYDROCARBONS; DESIGN; ETHANE/ETHYLENE; PERFORMANCE; IRMOF-8;
D O I：
10.1002/anie.202008132
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The NIIC-20 (NIIC stands for Nikolaev Institute of Inorganic Chemistry) is a family of five isostructural metal-organic frameworks (MOFs) based on dodecanuclear wheel-shaped carboxylate building blocks {Zn-12(RCOO)(12)(glycol)(6)} (glycol is deprotonated diatomic alcohol: ethylene glycol, 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol or glycerol), quantitatively crystallized from readily available starting chemicals. The crystal structures contain large mesoporous cages of 25 angstrom connected through {Zn-12} rings, of which inner diameter and chemical nature depend solely on the chosen glycol. The NIIC-20 compounds feature high surface area and rarely observed inversed adsorption affinity for saturated hydrocarbon (ethane) over the unsaturated ones (ethylene, acetylene). The corresponding IAST (Ideal Adsorbed Solution Theory) adsorption selectivity factors reach as much as 15.4 for C2H6/C(2)H(4)and 10.9 for C2H6/C(2)H(2)gas mixtures at ambient conditions, exceeding those for any other porous MOF reported so far. The remarkable combination of high adsorption uptakes and high adsorption selectivities makes the NIIC-20 series a new benchmark of porous materials designed for ethylene separation applications.
引用
收藏
页码：20561 / 20567
页数：7
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