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One-Pot Synthesis of Two-Linker Mixed Al-Based Metal–Organic Frameworks for Modulated Water Vapor Adsorption
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2020-08-27 , DOI: 10.1021/acs.cgd.0c00747 Bingqiong Tan 1 , Yanshu Luo 1 , Xianghui Liang 1 , Shuangfeng Wang 1 , Xuenong Gao 1 , Zhengguo Zhang 1 , Yutang Fang 1
Crystal Growth & Design ( IF 3.2 ) Pub Date : 2020-08-27 , DOI: 10.1021/acs.cgd.0c00747 Bingqiong Tan 1 , Yanshu Luo 1 , Xianghui Liang 1 , Shuangfeng Wang 1 , Xuenong Gao 1 , Zhengguo Zhang 1 , Yutang Fang 1
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Metal–organic frameworks (MOFs) as adsorbents have attracted interest in water-based adsorption applications due to their typical S-shape vapor adsorption isotherms and low regeneration temperature compared to traditionally used materials such as zeolites and silica gel. In this research, the mixed Al-based MOFs (CAU-10-H and Al-fumarate) with isophthalic acid and fumaric acid two ligands were fabricated by one-pot solvothermal method, which displayed a controllable water uptake step. The linker content included in mixed MOFs was assessed by 1H NMR spectroscopy, and the amount of each MOF crystal was uncovered by X-ray diffraction. Nitrogen physisorption data revealed that the BET surface area and pore size distribution of the mixed materials could be modulated between the limits of pure CAU-10-H and Al-fumarate. The dynamic adsorption displayed that their water adsorption isotherms could be tuned in the range of P/P0 = 14–30%. With the increase of the isophthalic acid molar fraction, the water vapor adsorption isotherms of the obtained adsorbents shifted to lower P/P0 values. The desorption performance of the mixed MOFs was between two pure MOFs. Using a one-pot synthetic approach, significant alterations in MOF water adsorption/desorption properties may be realized to accommodate the desired adsorption applications.
中文翻译：
一锅法合成两键混合铝基金属有机骨架用于调制水蒸气吸附
由于金属有机骨架（MOFs）具有典型的S形蒸气吸附等温线和与传统使用的材料（如沸石和硅胶）相比较低的再生温度，因此在水基吸附应用中引起了人们的关注。在这项研究中，通过一锅溶剂热法制备了具有间苯二甲酸和富马酸两个配体的混合铝基MOF（CAU-10-H和富马酸铝），显示出可控的吸水步骤。混合MOF中包含的连接子含量由1评估1 H NMR光谱法和X射线衍射未发现每个MOF晶体的量。氮的物理吸附数据表明，混合材料的BET表面积和孔径分布可以在纯CAU-10-H和富马酸铝的极限之间进行调节。动态吸附表明，它们的水吸附等温线可以在P / P 0 = 14–30％的范围内调整。随着间苯二甲酸摩尔分数的增加，所得吸附剂的水蒸气吸附等温线向较低的P / P 0转移。价值观。混合MOF的解吸性能介于两个纯MOF之间。使用一锅法合成方法，可以实现MOF水吸附/解吸特性的重大变化，以适应所需的吸附应用。
更新日期：2020-10-07
中文翻译：
一锅法合成两键混合铝基金属有机骨架用于调制水蒸气吸附
由于金属有机骨架（MOFs）具有典型的S形蒸气吸附等温线和与传统使用的材料（如沸石和硅胶）相比较低的再生温度，因此在水基吸附应用中引起了人们的关注。在这项研究中，通过一锅溶剂热法制备了具有间苯二甲酸和富马酸两个配体的混合铝基MOF（CAU-10-H和富马酸铝），显示出可控的吸水步骤。混合MOF中包含的连接子含量由1评估1 H NMR光谱法和X射线衍射未发现每个MOF晶体的量。氮的物理吸附数据表明，混合材料的BET表面积和孔径分布可以在纯CAU-10-H和富马酸铝的极限之间进行调节。动态吸附表明，它们的水吸附等温线可以在P / P 0 = 14–30％的范围内调整。随着间苯二甲酸摩尔分数的增加，所得吸附剂的水蒸气吸附等温线向较低的P / P 0转移。价值观。混合MOF的解吸性能介于两个纯MOF之间。使用一锅法合成方法，可以实现MOF水吸附/解吸特性的重大变化，以适应所需的吸附应用。
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