摘要
以软模板法合成介孔碳(MC),添加三聚氰胺为改性剂合成氮改性介孔碳(NMC),并进行N2吸-脱附、TEM和FT-IR表征,同时考察NMC和MC对水中壬基酚聚氧乙烯醚(NPEO10)的吸附性能。结果表明,NMC和MC的比表面积分别为579.6m^2/g和687.8m^2/g。吸附过程符合准二级动力学模型,吸附行为遵循Freundlich等温模型,为优惠吸附。吸附过程为可自发进行的放热反应,无化学键等强键作用,主要以物理吸附为主。吸附饱和后的NMC和MC经5次循环/再生后对NPEO10的去除率均在60%以上。与活性炭(AC)相比,NMC和MC的吸附效果更优越。
Mesoporous carbon （MC） was first prepared in the approach of soft template, and melamine then was added into it to prepare Nmodified mesoporous carbon （NMC）. N2 adsorptiondesorption, TEM and FT-IR were used to characterize the textural properties of mesoporous materials. The adsorption behavior and removal rate of nonylphenol ethoxylates onto NMC and MC were investigated. The results showed that the BET specific surface area of NMC and MC were 579.6 m^2/g and 687.8 m^2/g, respectively. The adsorption process was well described using pseudosecondorder kinetics. Nonylphenol ethoxylates adsorption onto NMC and MC fitted well Freundlich adsorption isotherms and the adsorption process was concluded to be a favorable adsorption. 〖JP2〗The adsorption is an exothermal （enthalpy ΔH〈0） and spontaneous （free energy ΔG〈0） process, with a decrease in entropy （ΔS〈0）. The adsorption based mainly physical adsorption without bonds of strong action, such as chemical bonds. Using NMC and MC with saturation adsorption, nonylphenol ethoxylates’ removal efficiency were higher than 60% after five cycle regeneration tests. Additionally,NMC and MC exhibited a higher adsorption capability for nonylphenol ethoxylates as compared to activated carbon（AC）.
作者
张双
刘芳
李佳蔓
张春艳
高雅
赵朝成
孙娟
刘春爽
ZHANG Shuang LIU Fang LI Jiaman ZHANG Chunyan GAO Ya ZHAO Chaocheng SUN Juan LIU Chunshuang(College of Chemical Engineering , China University of Petroleum, Qingdao 266555 , Chin)
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2017年第3期471-479,共9页
Acta Petrolei Sinica(Petroleum Processing Section)
基金
中国石油大学(华东)拔尖人才资助项目(RC2015011)资助
关键词
介孔碳
氮改性介孔碳
吸附
壬基酚聚氧乙烯醚
循环再生
mesoporous carbon
N-modified mesoporous carbon
adsorption
nonylphenol ethoxylates
cycle regeneration
