两步法改性活性炭的苯蒸气吸附性能  

Benzene vapor adsorption properties of two-step modified activated carbon

作　　者：王涛 曹东鑫 王毅凡 王利畏 梁莉 许磊 WANG Tao;CAO Dongxin;WANG Yifan;WANG Liwei;LIANG Li;XU Lei(Faculty of Engineering,China University of Petroleum(Beijing)at Karamay,Karamay 834000,China;Sinopec Petroleum Engineering Zhongyuan Corporation Natural Gas Technology Center,Zhengzhou 451000,China;College of Materials Science,Henan University of Engineering,Zhengzhou 451191,China)

机构地区：[1]中国石油大学(北京)克拉玛依校区工学院,新疆克拉玛依834000 [2]中石化中原石油工程设计有限公司技术发展中心,河南郑州451000 [3]河南工程学院材料工程学院,河南郑州451191

出　　处：《石油化工》2024年第12期1727-1732,共6页Petrochemical Technology

基　　金：2024年克拉玛依市创新环境建设计划(创新人才)项目(2024hjcxrc0017)。

摘　　要：分步采用NaOH和氧化石墨烯(GO)对活性炭(AC)进行改性得到复合吸附材料AC-NaOH/GO,利用SEM,FTIR等方法分析了材料的微观结构及其对苯蒸气的吸附性能。实验结果表明,NaOH改性后AC出现更丰富的微孔结构,有利于提高吸附能力,而添加少量GO可提高材料对苯蒸气的吸附选择性。其中,AC-NaOH与GO质量比为1∶0.1的AC-NaOH/GO-1的比表面积和总孔体积相比AC分别提高了46.3%和16.8%,对苯蒸气的吸附平衡量和吸附平衡时间较AC分别提高了56.1%和14.77%。GO和AC-NaOH经真空热处理后π-π电子间扩散力增强,从而有利于增大对苯的吸附容量。AC-NaOH/GO composite adsorption material was prepared by modifying activated carbon(AC)with NaOH and graphene oxide(GO)step by step.The microstructure and adsorption properties of AC-NAOH/GO and its benzene adsorption performance were analyzed by SEM and FTIR.The experimental results show that NaOH-modified AC has more abundant micropore structures,which is conducive to improving the adsorption capacity,and adding a small amount of GO can improve the adsorption selectivity of benzene vapor.When the mass ratio of AC-NaOH to GO is 1∶0.1,compared with AC,the specific surface area and total pore volume of AC-NaOH/GO-1 are increased by 46.3%and 16.8%,respectively,and the adsorption equilibrium amount and adsorption equilibrium time of benzene vapor are increased by 56.1%and 14.77%,respectively.After vacuum heat treatment,theπ-πelectron diffusion between GO and AC-NaOH is enhanced,which is conducive to increasing the benzene adsorption capacity.

关 键 词：活性炭 改性 氧化石墨烯 苯 吸附 

分 类 号：TQ424.1[化学工程]