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首页> 外文期刊>Chemistry: A European journal >The Metal-Organic Framework MIL-53(Al) Constructed from Multiple Metal Sources: Alumina, Aluminum Hydroxide, and Boehmite
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The Metal-Organic Framework MIL-53(Al) Constructed from Multiple Metal Sources: Alumina, Aluminum Hydroxide, and Boehmite

机译：金属有机骨架MIL-53（Al）由多种金属来源构成：氧化铝，氢氧化铝和勃姆石

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摘要

Three aluminum compounds, namely alumina, aluminum hydroxide, and boehmite, are probed as the metal sources for the hydrothermal synthesis of a typical metal-organic framework MIL-53(Al). The process exhibits enhanced synthetic efficiency without the generation of strongly acidic byproducts. The time-course monitoring of conversion from different aluminum sources into MIL-53(Al) is achieved by multiple characterization that reveals a similar but differentiated crystallinity, porosity, and morphology relative to typical MIL-53(Al) prepared from water-soluble aluminum salts. Moreover, the prepared MIL-53(Al) constructed with the three insoluble aluminum sources exhibit an improved thermal stability of up to nearly 600 degrees C and enhanced yields. Alumina and boehmite are more preferable than aluminum hydroxide in terms of product porosity, yield, and reaction time. The adsorption performances of a typical environmental endocrine disruptor, dimethyl phthalate, on the prepared MIL-53(Al) samples are also investigated. The improved structural stability of MIL-53(Al) prepared from these alternative aluminum sources enables double-enhanced adsorption performance (up to 206 mg g(-1)) relative to the conventionally obtained MIL-53(Al).
机译：探讨了三种铝化合物，即氧化铝，氢氧化铝和勃姆石，作为水热合成典型金属有机骨架MIL-53（Al）的金属源。该方法显示出增强的合成效率，而没有产生强酸性副产物。通过多种表征可实现从不同铝源向MIL-53（Al）转化的时程监控，该表征与相对于由水溶性铝制得的典型MIL-53（Al）相似但有区别的结晶度，孔隙率和形貌盐。此外，用三种不溶铝源构成的制得的MIL-53（Al）表现出高达近600摄氏度的改进的热稳定性，并提高了产率。就产物孔隙率，产率和反应时间而言，氧化铝和勃姆石比氢氧化铝更优选。还研究了典型的环境内分泌干扰物邻苯二甲酸二甲酯在制备的MIL-53（Al）样品上的吸附性能。由这些替代铝源制备的MIL-53（Al）的结构稳定性得到了改善，相对于常规获得的MIL-53（Al），其吸附性能得到了双倍提高（最高206 mg g（-1））。

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