Review of adsorptive removal of volatile organic compounds by zeolite

被引：0
|
作者：
Wang X. [1 ]
Wu Y. [1 ]
Yang X. [1 ]
Chen H. [1 ]
Zhang J. [1 ]
Ma X. [1 ]
机构：
[1] School of Chemical Engineering, Northwest University, Xi'an
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2021年 / 40卷 / 05期
关键词：
Adsorption; Composites; Hydrophobicity; Volatile organic compounds (VOCs); Zeolite;
D O I：
10.16085/j.issn.1000-6613.2020-1145
中图分类号：
学科分类号：
摘要：
As the major pollutants in air, volatile organic compounds (VOCs) have caused serious damage to the environment and human health. Due to its low cost and easy operation, the adsorption technology has been considered as one of the effective solutions for the enrichment of low concentration of VOCs in air. Zeolites have showed unique selective adsorption ability in molecular scale due to their highly ordered micropores with adjustable pore sizes and excellent thermostability, which allows them to be high-performance adsorbent candidates for VOCs. Besides, the selective adsorption behavior of the micropore zeolites was mainly decided by the types of framework topology and balanced cation. The enhancement in structural hydrophobicity of zeolites could effectively reduce the competitive adsorption between VOCs and water molecules under high humidity. By introducing macro-/mesopores into zeolite crystals or constructing hybrid adsorbents with macro-/mesopores materials, the obtained hierarchical porous adsorbents possessed much larger specific surface areas and total pore volumes, resulting in an increased adsorption capacity of VOCs. Zeolites were easy to process by extrusion or coating on shaped substrates, and the obtained monolithic adsorbents revealed higher mechanical strength and better abrasive resistance than the original powders. As a representative, zeolite adsorbent rotor, which was constructed by cellular zeolite monoliths, was successfully used for the effective removal of VOCs from industrial emissions. © 2021, Chemical Industry Press Co., Ltd. All right reserved.
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页码：2813 / 2826
页数：13
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