Knowledge Management System Of Institute of process engineering,CAS
| Extraction of coal-tar pitch using NMP/ILs mixed solvents | |
| Alternative Title | Sci. China-Chem. |
| Huang JinCheng1,2; Li ChunShan2; Bai Lu2; Nie Yi2; Wang ErQiang1; He YuJian1; Zhang SuoJiang2 | |
| 2014-12-01 | |
| Source Publication | SCIENCE CHINA-CHEMISTRY
 |
| ISSN | 1674-7291 |
| Volume | 57Issue:12Pages:1760-1765 |
| Abstract | 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 C-13-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.; 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 C-13-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. |
| Keyword | Coal-tar Pitch Ionic Liquid Nmp Extraction H/c |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1007/s11426-014-5189-5 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | IONIC LIQUIDS ; LIQUEFACTION RESIDUE ; ORGANIC-SOLVENTS ; DISSOLUTION ; ASPHALTENES ; LIGNITE |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000346047500020 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/11752 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Huang JinCheng,Li ChunShan,Bai Lu,et al. Extraction of coal-tar pitch using NMP/ILs mixed solvents[J]. SCIENCE CHINA-CHEMISTRY,2014,57(12):1760-1765. |
| APA | Huang JinCheng.,Li ChunShan.,Bai Lu.,Nie Yi.,Wang ErQiang.,...&Zhang SuoJiang.(2014).Extraction of coal-tar pitch using NMP/ILs mixed solvents.SCIENCE CHINA-CHEMISTRY,57(12),1760-1765. |
| MLA | Huang JinCheng,et al."Extraction of coal-tar pitch using NMP/ILs mixed solvents".SCIENCE CHINA-CHEMISTRY 57.12(2014):1760-1765. |
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| Extraction of coal-t（469KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text | |
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