Banerjee Rahul, Phan Anh, Wang Bo, Knobler Carolyn, Furukawa Hiroyasu, O'Keeffe Michael, Yaghi Omar M
Center for Reticular Chemistry at California NanoSystems Institute, Department of Chemistry and Biochemistry, University of California at Los Angeles, 607 East Charles E. Young Drive, Los Angeles, CA 90095, USA.
Science. 2008 Feb 15;319(5865):939-43. doi: 10.1126/science.1152516.
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 approximately 83 liters of CO2 at 273 kelvin under ambient pressure.
开发了一种用于合成沸石咪唑酯骨架（ZIFs）的高通量方法。仅通过9600次锌（II）/钴（II）与咪唑酯/咪唑酯型连接体的微反应，就合成出了25种不同的ZIF晶体。所有ZIF结构均具有四面体骨架：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组成和结构，5种具有在沸石中尚未观察到的拓扑结构。这些ZIFs中的一部分（称为ZIF-68、ZIF-69和ZIF-70）在回流的有机和水性介质中具有高热稳定性（高达390摄氏度）和化学稳定性。它们的骨架具有高孔隙率（表面积高达每克1970平方米），并且对从CO2/CO混合物中捕获CO2表现出异常的选择性以及储存CO2的非凡能力：在273开尔文和环境压力下，1升ZIF-69可以容纳约83升CO2。
