Alkoxy-Group-Functionalized UiO-66 as Highly Efficient Adsorbents for Hydrogen Chloride Removal from Aqueous Solution
作者:Hongxu Liu、Xiaoyu Lan、Peng Bai、Xianghai Guo
DOI:10.1021/acs.jced.8b00802
日期:2019.1.10
A series of alkoxy group-functionalized UiO-66 were designed for hydrogen chloride adsorption from aqueous solution, which were characterized by various methods to verify the structures and study the adsorption mechanism. A volcano-shaped change of adsorption capacity was discovered. UiO-66-C2 exhibited the highest adsorption capacity and excellent structure stability. The adsorption kinetics, isotherms
设计了一系列烷氧基官能化的UiO-66,用于从水溶液中吸附氯化氢,并通过各种方法对其进行了表征,以验证其结构并研究其吸附机理。发现火山的吸附能力发生了变化。UiO-66-C 2表现出最高的吸附能力和优异的结构稳定性。研究了吸附动力学,等温线和热力学。发现伪二级动力学模型很好地拟合了动力学研究中的实验数据。同时,Henry和Freundlich模型都很好地拟合了等温线实验数据。热力学参数进一步证实了氯化氢在UiO-66-C 2上的吸附是一个自发的,放热的物理吸附过程。再生实验表明,UiO-66-C 2具有较高的再生效率,回收后未确认吸附容量有明显变化。所有结果证实了UiO-66-C 2可以作为处理酸性废水的有效方法。