文献类型：期刊文献

英文题名：Improving Toluene Capture Ability in Humid Environments by the Inner Surface Silanization of Zeolite

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

机构：[1] School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230141660)

语种：英文

外文关键词：Toluene - Zeolites

摘要：Although Y zeolites are considered as promising adsorbents for capturing VOCs, their hydrophilic nature causes a significantly reduction in performance due to the pervasive water vapor in the VOCs stream. Herein, the inner and outer surfaces of HY are post-synthetic silanization with different silane agents, respectively. Methyl groups of TMeCS replace protons in hydroxyl groups on the inner surface of HY, accompanied by the formation of siloxane bonds. Attachment of methyl groups to the inner surface led to a significant reduction in both water affinity and ware diffusion rate, resulting in a notable enhancement of toluene adsorption capacity in humid environments. However, the outer surface silanization with TPrCS is ineffective in mitigating the detrimental impact of water on the toluene adsorption capacity. In this work, this regioselective silanization approach can provide a facile strategy for the adsorption/separation application of aluminosilicate zeolites. ? 2023, The Authors. All rights reserved.