In Situ Synthesis and Performance of Aluminum Fumarate Metal-Organic Framework Monolithic Adsorbent for Water Adsorption
In Situ Synthesis and Performance of Aluminum Fumarate Metal-Organic Framework Monolithic Adsorbent for Water Adsorption
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富马酸铝金属有机骨架整体式水吸附剂的原位合成及性能
DOI：
10.1021/acs.iecr.9b03172
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发表时间：
2019
影响因子：
4.2
通讯作者：
Fang Yutang
中科院分区：
文献类型：
--
作者：
Tan Bingqiong;Luo Yanshu;Liang Xianghui;Wang Shuangfeng;Gao Xuenong;Zhang Zhengguo;Fang Yutang
整体式吸附剂是吸附式旋转除湿系统的关键部件。它通常是通过在玻璃纤维纸上浸涂吸附剂来制备的。介绍了一种在玻璃纤维纸上原位合成富马酸铝(A520)金属-有机骨架整体吸附剂的新方法。系统地讨论了富马酸与水的摩尔比、反应温度和反应时间对整体式吸附剂的晶相、孔结构和吸附性能的影响。用扫描电子显微镜对吸附剂的形貌进行了表征，用动态水蒸气吸附和差热分析评价了吸附剂的吸附和解吸性能。结果表明，在富马酸与水的摩尔比为0.02时，反应温度为50℃，反应时间为60min时，得到的A520柱具有最大的比表面积(740.15 m2·g-1)和较高的吸附容量(0.3906 g·g-1)。该整体式吸附剂携带约76%的A520粉末，具有制备工艺简单、吸附容量大、吸附速度快、脱附温度低等优点，为制备高效除湿除湿转轮提供了指导。
The monolithic adsorbent is a key part of an adsorptive rotary dehumidification system. It is usually prepared by dip-coating the adsorbent on glass fiber paper. In this study, a new in situ strategy for synthesis of an aluminum fumarate (A520) metal–organic framework monolithic adsorbent on glass fiber paper is introduced. The influences of the mole ratio of fumaric acid to H2O, the reaction temperature and time on the crystal phase, the pore structure, and the adsorption performance of the monolithic adsorbent are systematically discussed. The morphology of the adsorbent was characterized by scanning electronic microscopy, and the adsorption and desorption performances were evaluated by dynamic vapor sorption and differential thermogravimetric analysis. The results showed that under the conditions of a mole ratio of fumaric acid to H2O of 0.02, reaction temperature of 50 °C, and reaction time of 60 min, the obtained A520 monolith exhibited the highest BET surface area (740.15 m2·g–1) and high adsorption capacity (0.3906 g·g–1). The monolithic adsorbent carries about 76% A520 powder with the advantages of a facile fabrication process, high adsorption capacity, rapid adsorption rate, and low desorption temperature, providing guidance for the fabrication of a highly efficient desiccant dehumidification wheel.