Exceptionally Robust In-Based Metal–Organic Framework for Highly Efficient Carbon Dioxide Capture and Conversion

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• 作者：Lin Liu ; Shi-Ming Wang ; Zheng-Bo Han ; Meili Ding ; Da-Qiang Yuan ; Hai-Long Jiang
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：April 4, 2016
• 年：2016
• 卷：55
• 期：7
• 页码：3558-3565
• 全文大小：525K
• ISSN：1520-510X

文摘

An In-based metal–organic framework, with 1D nanotubular open channels, In₂(OH)(btc)(Hbtc)_0.4(L)_0.6·3H₂O (1), has been synthesized via an in situ ligand reaction, in which 1,2,4-H₃btc is partially transformed into the L ligand. Compound 1 exhibits exceptional thermal and chemical stability, especially in water or acidic media. The activated 1 presents highly selective sorption of carbon dioxide (CO₂) over dinitrogen. Interestingly, diffuse-reflectance infrared Fourier transform spectroscopy with a carbon monoxide probe molecule demonstrates that both Lewis and Brønsted acid sites are involved in compound 1. As a result, as a heterogeneous Lewis and Brønsted acid bifunctional catalyst, 1 possesses excellent activity and recyclability for chemical fixation of CO₂ coupling with epoxides into cyclic carbonates under mild conditions. In addition, the mechanism for the CO₂ cycloaddition reaction has also been discussed.