A new MOF with high water stability and selective CO2 adsorption

IF 1.7 4区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Transition Metal Chemistry Pub Date : 2025-02-17 DOI:10.1007/s11243-025-00643-9

Cong Chen

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引用次数: 0

Abstract

A new MOF, {[Fe₁₅(µ₃-O)₅(L⁴⁻)₆(H₂O)₁₃(CH₃COO)₈]Cl₃}n (SYU-3, SYU for Shenyang University, H₄L = [1,1′:4′,1″-triphenyl]-3,3″,5,5″-tetracarboxylic acid), with (3,3,4,4,4,4,4,4,5,6,7)-connected nets, was synthesized via the combination of H₄L with FeCl₃·6H₂O in N,N-dimethylformamide/acetic acid solvent system. Interestingly, SYU-3 is isomorphic to Quin-Fe-TPTC, which is a five-component MOF based on the same metal and ligand and possesses cages and channels in it. However, SYU-3 shows a different valence state of iron and was obtained by a one-step reaction without the need to prepare Fe–O clusters in advance. Moreover, SYU-3 exhibits high water stability, it also shows 10.4 wt% carbon dioxide adsorption amounts under 298 K and 1 bar and 84.7 adsorption selectivity of carbon dioxide to nitrogen. Grand canonical Monte Carlo simulations show that both cages and channels provide carbon dioxide binding sites, which may result in the selective carbon dioxide adsorption of SYU-3.

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一种具有高水稳定性和选择性CO2吸附的新型MOF

在n， n -二甲基甲酰胺/乙酸溶剂体系中，以H4L与FeCl3·6H2O结合，合成了具有（3,3,4,4,4,4,4,4,4,4,4,4,5,6,7）网的新型MOF {[Fe15（µ3- o）5(L4−)6(H2O)13（CH3COO)8]Cl3}n (SYU-3， SYU), H4L =[1,1 ':4 '，1″-三苯基]-3,3″，5,5″-四羧酸）。有趣的是，SYU-3与Quin-Fe-TPTC是同构的，Quin-Fe-TPTC是一种基于相同金属和配体的五组分MOF，其中具有笼和通道。而SYU-3则表现出不同的价态，无需预先制备Fe-O簇，只需一步反应即可得到。此外，SYU-3具有较高的水稳定性，在298 K和1 bar条件下，二氧化碳吸附量为10.4%，二氧化碳对氮的吸附选择性为84.7。大规范蒙特卡罗模拟表明，笼型和通道都提供了二氧化碳结合位点，这可能导致SYU-3对二氧化碳的选择性吸附。

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来源期刊

Transition Metal Chemistry 化学-无机化学与核化学

CiteScore

3.60

自引率

0.00%

发文量

审稿时长

1.3 months

期刊介绍： Transition Metal Chemistry is an international journal designed to deal with all aspects of the subject embodied in the title: the preparation of transition metal-based molecular compounds of all kinds (including complexes of the Group 12 elements), their structural, physical, kinetic, catalytic and biological properties, their use in chemical synthesis as well as their application in the widest context, their role in naturally occurring systems etc. Manuscripts submitted to the journal should be of broad appeal to the readership and for this reason, papers which are confined to more specialised studies such as the measurement of solution phase equilibria or thermal decomposition studies, or papers which include extensive material on f-block elements, or papers dealing with non-molecular materials, will not normally be considered for publication. Work describing new ligands or coordination geometries must provide sufficient evidence for the confident assignment of structural formulae; this will usually take the form of one or more X-ray crystal structures.