无定形沸石咪唑酯骨架的简便机械合成。
Facile mechanosynthesis of amorphous zeolitic imidazolate frameworks.
机构信息
Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ, UK.
出版信息
J Am Chem Soc. 2011 Sep 21;133(37):14546-9. doi: 10.1021/ja206082s. Epub 2011 Aug 24.
A fast and efficient mechanosynthesis (ball-milling) method of preparing amorphous zeolitic imidazolate frameworks (ZIFs) from different starting materials is discussed. Using X-ray total scattering, N(2) sorption analysis, and gas pycnometry, these frameworks are indistinguishable from one another and from temperature-amorphized ZIFs. Gas sorption analysis also confirms that they are nonporous once formed, in contrast to activated ZIF-4, which displays interesting gate-opening behavior. Nanoparticles of a prototypical nanoporous substituted ZIF, ZIF-8, were also prepared and shown to undergo amorphization.
讨论了一种快速高效的机械合成（球磨）方法，可从不同起始材料制备无定形沸石咪唑酯骨架（ZIFs）。使用 X 射线总散射、N2 吸附分析和气体比重计，这些骨架彼此之间以及与温度非晶化的 ZIF 之间没有区别。气体吸附分析还证实，一旦形成，它们是无孔的，与具有有趣的门控开启行为的活化 ZIF-4 形成对比。还制备了一种典型的纳米多孔取代 ZIF-ZIF-8 的纳米颗粒，并显示其发生非晶化。
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