活性炭微观结构调控与甲苯二胺选择性吸附研究  

Microstructure regulation and selective adsorption of toluene diamine over activated carbon

作　　者：董鹏[1,2] 李贵贤 李红伟[1,2] 李晓明 王伟[1] 王东亮 DONG Peng;LI Gui-xian;LI Hong-wei;LI Xiao-ming;WANG Wei;WANG Dong-liang(School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Low Carbon Energy and Chemical Engineering of Gansu Province,Lanzhou 730050,China;Gansu Yinguang Juyin Chemical Co.,Ltd.,Baiyin 730900,China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]甘肃省低碳能源化工重点实验室,甘肃兰州730050 [3]甘肃银光聚银化工有限公司,甘肃白银730900

出　　处：《应用化工》2022年第10期2923-2927,共5页Applied Chemical Industry

基　　金：甘肃省重点研发计划项目(20YF8FA062)。

摘　　要：从活性炭、硅藻土、ZSM-5分子筛、人造沸石等常见多孔材料中,筛选出吸附性能较优的活性炭作为吸附剂,通过酸、碱等改性方法对活性炭孔结构和表面官能团进行调控,并采用静态吸附实验研究了改性活性炭吸附分离TDA焦油的效果。结果表明,活性炭的孔结构主要影响活性炭对甲苯二胺焦油的总吸附容量,而活性炭的表面官能团则显著影响TDA的选择性,酸性基团有利于增强活性炭对TDA的选择性。在最优条件下,CH_(3)COOH改性活性炭对TDA的选择性达到98%以上,改性活性炭吸附过程受到化学吸附因素控制。Activated carbon owning a better adsorption performance as adsorbent was screened out firstly from activated carbon,diatomite,ZSM-5 zeolite,artificial zeolite and other common porous materials.The pore structure and surface functional groups of activated carbon were regulated by acid and alkali modification methods,and the adsorption effect of TDA tar on modified activated carbon was studied by static adsorption experiment.The results showed that the pore structure of activated carbon mainly affected the total adsorption capacity for TDA tar,while the surface functional groups of activated carbon significantly affected the adsorption selectivity for TDA,and the acidic groups were beneficial to enhance the selectivity of TDA.Under the optimal conditions,the adsorption selectivity for TDA of CH_(3)COOH modified activated carbon could reach more than 98%,and the adsorption process of activated carbon modified was controlled by chemical adsorption.

关 键 词：甲苯二胺焦油 选择性吸附 吸附材料 活性炭 改性 

分 类 号：TQ09[化学工程]