摘要
探讨了负压浸渍法制备磁性活性炭的浸渍条件,浸渍溶液为油酸修饰的Fe3O4磁性凝胶均匀分散在正己烷溶剂中形成的磁性溶液. 通过对油酸修饰的磁性凝胶进行差热、热重和微热容分析确立了浸渍产物的热处理条件,考察了磁性溶液浓度、浸渍时间、浸渍温度对浸渍产物的影响,并采用X射线衍射对磁性活性炭的组份和结构进行了表征,采用磁强计测定了磁性活性炭的磁性能,用比表面、孔容测试技术比较了活性炭和磁性活性炭的比表面、孔体积和孔分布.
The preparation conditions of magnetic activated carbon were studied by negative pressure impregnation. Impregnated solution was formed by dispersing uniformly magnetic gel in n-hexane. The thermal treatment conditions of the impregnation product were determined by the DTA-TG analysis. The effects of the impregnated solution concentration, impregnated time, impregnated temperature were investigated. The composition and configuration of the magnetic activated carbon prepared were characterized by XRD. The magnetic strength of the magnetic activated carbon was tested by VSM. The changes of specific area, pore volume and pore distribution pattern were analyzed by a specific area and pore volume analyzer between the activated carbon and the magnetic activated carbon.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2004年第2期141-145,共5页
The Chinese Journal of Process Engineering
基金
中国石油化工股份有限公司科研基金资助项目(编号:X500014)
关键词
磁性溶液
负压浸渍
活性炭
制备
表征
magnetic solution
negative pressure impregnated
activated carbon
