文献类型：期刊文献

英文题名：The role of layered double hydroxides shell in enhancing the adsorption capacity of NaY zeolite for toluene in wet conditions

作者：Li, Yanyao[1];Yin, Tao[1];Xu, Jiawen[1];Liu, Naiwang[1];Shi, Li[1];Meng, Xuan[1]

机构：[1]East China Univ Sci & Technol, Int Joint Res Ctr Green Energy Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：29

期号：5

外文期刊名：ENVIRONMENTAL ENGINEERING RESEARCH

收录：;EI(收录号：20240915638367);WOS:【SCI-EXPANDED(收录号:WOS:001301901100013)】；

基金：This study received no specific financing from funding agencies in the public, commercial, or non-profit sectors.

语种：英文

外文关键词：Adsorption capacity; Hydrophobicity; Layered double hydroxide shell; Toluene; Zeolites

摘要：Surface modification of zeolite is known to enhance its adsorption capacity for volatile organic compounds (VOCs). In this study, a hydrophobic adsorbent, NaY@LDHs, with layered double hydroxides (LDHs) as the shell and NaY zeolite as the core, was successfully synthesized. It was found that treating LDHs with ethanol can result in a larger specific surface area and pore volume, enhancing the adsorption performance of toluene under wet conditions. SEM imaging reveals that the LDHs shell grows vertically on the surface of the NaY zeolite. The dynamic adsorption experiment of toluene showed that under humid conditions, NaY@LDHs exhibited a saturated adsorption capacity of 32.42 mg/g, representing a significant 87% increase compared to the parent NaY zeolite. The kinetic results show that the adsorption of toluene on NaY@LDHs is primarily physical adsorption, and other factors influence the adsorption process in addition to intraparticle diffusion. Therefore, the air layer formed by the LDHs shell on the surface of NaY zeolite imparts a hydrophobic effect, making NaY@LDHs a promising material for adsorbing volatile organic compounds in a wet environment.