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Zeolite NPO-Type Azolate Frameworks
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DOI：10.1002/anie.202207467.png)
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摘要
En 中文
Three-membered rings (3-rings) are an important structural motif in zeolite chemistry, but their formation remains serendipitous in reticular chemistry when designing zeolitic imidazolate frameworks (ZIFs). Herein, we report a design principle for constructing four new ZIFs, termed ZIF-1001 to -1004, from tetrahedral Zn-II centers (T), benzotriazolate (bTZ), and different functionalized benzimidazolates (RbIM) that adopt a new zeolite NPO-type topology built from 3-rings. Two factors were critical for this discovery: i) incorporating the bTZ linker within the structures formed 3-rings due to a angle(T-bTZ-T) angle of 120-130 degrees reminiscent of the angle(Ge-O-Ge) angle (130 degrees) observed in germanate zeolite-type structures having 3-rings; and ii) RbIM guided the coordination chemistry of bTZ to bind preferentially in an imidazolate-type mode. This series' ability to selectively capture CO2 from high-humidity flue gas and trap ethane from tail gas during shale gas extraction was demonstrated.
Keyword:
Carbon Capture
Gas Separation
Porous Materials
Reticular Chemistry
Zeolitic Imidazolate Frameworks
期刊
IF:
16.9
论文数:
5.7W
被引数:
53.0W
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引用论文
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