A High-Stability Co-MOF with Open Metal Sites for C2H2/CO2/CH4 Separation

IF 4.3 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-02-18 DOI:10.1021/acs.inorgchem.5c00327

Tianyi Hou, He Wang, Yuan-Yuan Zhang, Zhengyi Di, Cheng-Peng Li

引用次数: 0

Abstract

One-step purification of C₂H₂ from ternary mixtures (C₂H₂, CO_2, and CH₄) can significantly reduce the energy consumption of the separation process, but it is extremely challenging. A new Co-MOF (TNU-BTTB-1) with a three-dimensional (3D) framework was synthesized, which displays high thermal stability, retaining its structural integrity at temperatures up to 400 °C. The structure possesses rich accessible open metal sites in the porous walls and shows high uptake for C₂H₂ (37.4 cm³ g^–1) and significant adsorption selectivity for C₂H₂ over CH₄ (20.1) and CO₂ (4.9) at 298 K and 100 kPa. Dynamic breakthrough studies show that it exhibits excellent C₂H₂ separation from C₂H₂/CO₂/CH₄ three-component mixtures.

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从三元混合物（C2H2、CO2 和 CH4）中一步提纯 C2H2 可显著降低分离过程的能耗，但这一过程极具挑战性。我们合成了一种具有三维（3D）框架的新型 Co-MOF（TNU-BTTB-1），它具有很高的热稳定性，在高达 400 °C 的温度下仍能保持结构的完整性。在 298 K 和 100 kPa 下，该结构的多孔壁具有丰富的可访问开放金属位点，对 C2H2 的吸附率高（37.4 cm3 g-1），对 C2H2 的吸附选择性显著优于 CH4（20.1）和 CO2（4.9）。动态突破研究表明，它从 C2H2/CO2/CH4 三组分混合物中分离出 C2H2 的效果极佳。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.