Extraction of coal-tar pitch using NMP/ILs mixed solvents

查看全文 作　　者：HUANG Jin [1,2]Cheng;LI Chun [2]Shan;BAI [2]Lu;NIE [2]Yi;WANG Er [1]Qiang;HE Yu [1]Jian;ZHANG Suo [2]Jiang

机构地区：[1]School of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences;[2]Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering, Chinese Academy of Sciences

出　　处：《Science China Chemistry》索引2014年第57卷第12期,共6页

基　　金：supported by the National Basic Research Program of China(2012CB214905);the National Natural Science Foundation of China(21076113) 摘　　要：Coal-tar pitch(CP)is a promising carbon raw material for producing needle coke,carbon fiber etc.During processing,the H/C ratio,ash content,and quinoline insoluble(QI)in the CP are the key factors that influence the material preparation.In this study,NMP was selected to extract CP first;then[BMIM]Cl/NMP mixed solvent was used;and finally a series of ionic liquids(ILs)mixtures with NMP were developed for the extraction of CP to obtain the refined pitch.The extracts were analyzed via elemental analysis,TGA,FT-IR,and 13C-NMR.Results indicate that different NMP/IL mass ratios or different kinds of ILs have impact on the extraction yield.The relationship of the hydrogen to carbon(H/C)ratio changed with different solvents and QI extracts were obtained.Results showed that the H/C ratios changed little between NMP extracts and could be adjusted by changing the NMP/ILs mass ratio or using different ILs.The extracts are suitable for preparation mesophase pitch because of no ash content,low QI,and appropriate H/C ratios.As a result,NMP can be used to refine pitch.In addition,[BMIM]Cl is good mixed with NMP for CP extraction,because it can obtain a relatively high yield under the same extraction conditions. 关键词：离子液体混合溶剂 NMP 提取率煤沥青灰分含量材料制备煤焦油沥青

相关文献

参考文献（37）
引证文献（3）
耦合文献（17）

参考文献(37)

引证文献(3)

耦合文献(17)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Extraction of coal-tar pitch using NMP/ILs mixed solvents

参考文献(37)

引证文献(3)

耦合文献(17)

用户提示