High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2 capture
High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2 capture
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DOI：
10.1126/science.1152516
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发表时间：
2008-02-15
期刊：
影响因子：
56.9
通讯作者：
Yaghi, Omar M.
中科院分区：
文献类型：
--
作者：
Banerjee, Rahul;Phan, Anh;Yaghi, Omar M.
开发了一种高通量合成方法用于制备沸石咪唑酯骨架结构材料（ZIFs）。仅通过9600次锌（II）/钴（II）与咪唑酯/咪唑酯类连接体的微量反应，合成了25种不同的ZIF晶体。所有的ZIF结构都具有四面体骨架：其中10种具有两种不同的连接（杂连接），16种是以前未观察到的成分和结构，5种具有在沸石中尚未观察到的拓扑结构。这些ZIF中的一部分（称为ZIF - 68、ZIF - 69和ZIF - 70）具有高热稳定性（高达390℃），并且在回流的有机和水介质中具有化学稳定性。它们的骨架具有高孔隙率（表面积高达1970平方米/克），并且对从二氧化碳/一氧化碳混合物中捕获二氧化碳表现出不同寻常的选择性，以及对储存二氧化碳具有非凡的能力：在环境压力下，1升ZIF - 69在273开尔文时可容纳约83升二氧化碳。
A high- throughput protocol was developed for the synthesis of zeolitic imidazolate frameworks ( ZIFs). Twenty- five different ZIF crystals were synthesized from only 9600 microreactions of either zinc( II)/ cobalt( II) and imidazolate/ imidazolate- type linkers. All of the ZIF structures have tetrahedral frameworks: 10 of which have two different links ( heterolinks), 16 of which are previously unobserved compositions and structures, and 5 of which have topologies as yet unobserved in zeolites. Members of a selection of these ZIFs ( termed ZIF- 68, ZIF- 69, and ZIF- 70) have high thermal stability ( up to 390 degrees C) and chemical stability in refluxing organic and aqueous media. Their frameworks have high porosity ( with surface areas up to 1970 square meters per gram), and they exhibit unusual selectivity for CO2 capture from CO2/CO mixtures and extraordinary capacity for storing CO2: 1 liter of ZIF- 69 can hold similar to 83 liters of CO2 at 273 kelvin under ambient pressure.