Preparation of novel highly stable fluorinated microporous polyketone networks through direct C–H arylation polycondensation for efficient natural gas separation

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED Microporous and Mesoporous Materials Pub Date : 2024-07-23 DOI:10.1016/j.micromeso.2024.113266

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Abstract

Two novel hyper-cross-linked fluorinated microporous polyketone networks (FMPN-1 and FMPN-2) with permanent porosity and narrow pore size distribution were synthesized via a facile “one-step” polycondensation between the trifluoroacetophenone-based monomers and 1,3,5-triphenylbenzene. The result polymers were investigated by FTIR, solid state NMR, EDX, XRD, TGA, SEM, and TEM et al. The geometry configurations difference of building blocks resulted in the polyketone networks exhibiting the BET special surface areas from 622 to 706 m² g⁻¹ and total volume from 0.58 to 0.66 cm³ g⁻¹. What's more, ideal adsorbed solution theory (IAST) analysis showed that the two polymers possessed good C₃H₈/CH₄, C₂H₆/CH₄ selectivities at 298K/1 bar. Together with the excellent thermal and physicochemical stabilities, the microporous fluorinated polyketone networks obtained in this work showed promising applications in adsorption/separation for C₁–C₃ hydrocarbons.

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通过直接 C-H 芳基化缩聚制备新型高稳定性氟化微孔聚酮网络，用于高效天然气分离

通过三氟苯乙酮基单体与 1,3,5-三苯基苯之间的 "一步法 "缩聚，合成了两种新型超交联氟化微孔聚酮网络（FMPN-1 和 FMPN-2），它们具有永久孔隙率和窄孔径分布。通过傅立叶变换红外光谱（FTIR）、固态核磁共振（NMR）、电离辐射X射线衍射（EDX）、X射线衍射（XRD）、热重分析（TGA）、扫描电镜（SEM）和电子显微镜（TEM）对合成聚合物进行了研究。该研究获得的微孔含氟聚酮网络具有优异的热稳定性和理化稳定性，在吸附/分离 C-C 碳氢化合物方面具有广阔的应用前景。

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.