文献类型：期刊文献

中文题名：改性树脂基活性炭对高湿度碘甲烷吸附性能研究

英文题名：Study on the adsorption performance of modified resin based activated carbon for high humidity iodomethane

作者：王艳[1];梁晓怿[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2025

卷号：44

期号：1

起止页码：58

中文期刊名：炭素技术

外文期刊名：Carbon Techniques

收录：;北大核心:【北大核心2023】；

语种：中文

中文关键词：树脂基活性炭;碘甲烷;吸附

外文关键词：Resin based activated carbon;iodomethane;adsorption

摘要：为提高活性炭对高湿度碘甲烷的吸附能力,采用十三氟辛基三乙氧基硅烷(氟硅烷)和三乙烯二胺(TEDA)对树脂基球形活性炭改性。通过FTIR、SEM-EDS、BET、吸水率测试以及碘甲烷穿透实验对改性前后活性炭进行表征和吸附性能分析。碘甲烷穿透测试结果表明,质量分数为3%的氟硅烷和9%浸渍比的TEDA复合改性活性炭的穿透吸附容量最大,达到14.29 mg·g^(-1),与基炭、3%的氟硅烷改性和9%的TEDA改性吸附剂相比分别增加了11.63 mg·g^(-1)、9.69 mg·g^(-1)和1.69 mg·g^(-1)。分析表明,氟硅烷改性使吸水率显著降低,减弱了水分子的竞争吸附,使吸附剂表面与碘甲烷结合的活性位点增加,增强吸附性能;同时TEDA浸渍使微孔减少较多但其与碘甲烷发生络合反应,增强化学吸附性能。本研究为解决核电站活性炭对碘甲烷吸附受湿度影响的问题提供了基础数据。
To improve the adsorption capacity of activated carbon for high humidity iodomethane,the resin based spherical activated carbon was modified with tridecluooctyl triethoxysilane(fluoroalkyl silane)and triethylenediamine(TEDA).The adsorption properties of modified activated carbon were characterized by FTIR,SEM-EDS,BET,water absorption and iodomethane penetration tests.The results of iodinemethane penetration test show that the penetration adsorption capacity of the composite modified activated carbon using 3%fluoroalkyl silane and 9%impregnation ratio TEDA is the highest,reaching 14.29 mg·g^(-1).Compared with the base carbon,3%fluoroalkyl silane modified adsorbent,and 9%TEDA modified adsorbent,it increases by 11.63 mg·g^(-1),9.69 mg·g^(-1),and 1.69 mg·g^(-1),respectively.Analysis shows that the modification of fluoroalkyl silane significantly reduces the water absorption rate,weakens the competitive adsorption of water molecules,and increases the active sites on the surface of the adsorbent that bind with iodomethane,enhancing the chemical adsorption performance.At the same time,TEDA impregnation reduces the number of micropores significantly,but it undergoes a complexation reaction with iodomethane,enhancing the chemical adsorption performance.This study provides basic data to address the issue of humidity affecting the adsorption of iodomethane by activated carbon in nuclear power plants.