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首页> 外文期刊>Chemistry: A European journal >A Low-Temperature Approach for the Phase-Pure Synthesis of MIL-140 Structured Metal-Organic Frameworks
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A Low-Temperature Approach for the Phase-Pure Synthesis of MIL-140 Structured Metal-Organic Frameworks

机译：用于MIL-140结构化金属 - 有机框架的相纯合成的低温方法

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摘要

In a systematic investigation, the synthesis of metal-organic frameworks (MOFs) with MIL-140 structure was studied. The precursors of this family of MOFs are the same as for the formation of the well-known UiO-type MOFs although the synthesis temperature for MIL-140 is significantly higher. This study is focused on the formation of Zrbased MIL-140 MOFs with terephthalic acid (H_2bdc), biphenyl- 4,4'-dicarboxylic acid (H_2bpdc), and 4,4'-stilbenedicarboxylic acid (H_2sdc) and the introduction of synthesis field diagrams to discover parameters for phase-pure products. In this context, a MIL-140 network with H_2sdc as linker molecule is first reported. Additionally, an important aspect is the reduction of the synthesis temperature to make MIL-140 MOFs more accessible even though linkers with a more delicate nature are used. The solvothermal syntheses were conducted in highly concentrated reaction mixtures whereby a targeted synthesis to yield the MIL-140 phase is possible. Furthermore, the effect of the often-used modulator approach is examined for these systems. Finally, the characteristics of the synthesized MOFs are compared with physisorption measurements, thermogravimetric analyses, and scanning electron microscopy.
机译：在系统调查中，研究了具有MIL-140结构的金属 - 有机框架（MOF）的合成。该系列MOF的前体与众所周知的UIO型MOF的形成相同，尽管MIL-140的合成温度显着更高。该研究专注于将Zrbased MIL-140MOF的形成具有对苯二甲酸（H_2BDC），联苯基-4,4'-二羧酸（H_2BPDC）和4,4'-斯基丁二羧酸（H_2SDC）和合成领域的引入发现阶段纯产品参数的图表。在此上下文中，首先报告具有H_2SDC作为链接器分子的MIL-140网络。另外，一个重要的方面是减少合成温度，使MIL-140MOF更加接近，即使使用具有更精细的性质的接头。在高度浓缩的反应混合物中进行溶剂热合成，由此可以产生靶向合成，得到MIL-140相。此外，对这些系统检查了经常使用的调节方法的效果。最后，将合成的MOF的特性与理性测量，热重分析和扫描电子显微镜进行比较。

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  • 来源
    《Chemistry: A European journal》 |2019年第59期|共11页
  • 作者

    Marcel Schulz; Nele Marquardt; Malte Sch?fer; Dawid Peter Warwas; Saskia Zailskas; Andreas Schaate;

  • 作者单位

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

    Institute of Inorganic Chemistry and ZFM-Center for Solid State Chemistry and New Materials Leibniz University Hannover Callinstr. 9 30167 Hannover (Germany);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    hybrid materials; metal-organic frameworks; MIL- 140; phase purity; synthesis field diagrams;

    机译：混合材料;金属 - 有机框架;MIL-140;相纯度;合成现场图;

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