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Application of iron - containing magnetic ionic liquids in extraction process of coal direct liquefaction residues / Jieli Wang in Industrial & engineering chemistry research, Vol. 51 N° 9 (Mars 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3776-3782 Titre : Application of iron - containing magnetic ionic liquids in extraction process of coal direct liquefaction residues Type de document : texte imprimé Auteurs : Jieli Wang, Auteur ; Hongwei Yao, Auteur ; Yi Nie, Auteur Année de publication : 2012 Article en page(s) : pp. 3776-3782 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Liquefaction  Coal  Extraction  process  Ionic  liquid Résumé : Three kinds of iron-containing magnetic ionic liquids (ILs), including imidazole-based, pyridine-based, and pyrrolidine-based ILs, were synthesized respectively, and were used to dissolve coal direct liquefaction residues (CDLR) to obtain asphaltene fractions under the conditions of given time, temperature, and mass ratio of ILs to CDLR. The extracts from CDLR were characterized by ultimate analysis, proximate analysis, FT-IR, and I3C NMR. The results show that physicochemical properties of the extracts obtained with different magnetic ILs consisting of different cationic rings are different, and pyridine-based magnetic IL is an effective extractant to extract asphaltenes from CDLR among the three magnetic IIs. The extracts might be good precursors for preparing high-value-added carbon materials because of their higher carbon content, lower H/C, and ash content. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595807 [article] Application of iron - containing magnetic ionic liquids in extraction process of coal direct liquefaction residues [texte imprimé] / Jieli Wang, Auteur ; Hongwei Yao, Auteur ; Yi Nie, Auteur . - 2012 . - pp. 3776-3782. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 9 (Mars 2012) . - pp. 3776-3782 Mots-clés : Liquefaction  Coal  Extraction  process  Ionic  liquid Résumé : Three kinds of iron-containing magnetic ionic liquids (ILs), including imidazole-based, pyridine-based, and pyrrolidine-based ILs, were synthesized respectively, and were used to dissolve coal direct liquefaction residues (CDLR) to obtain asphaltene fractions under the conditions of given time, temperature, and mass ratio of ILs to CDLR. The extracts from CDLR were characterized by ultimate analysis, proximate analysis, FT-IR, and I3C NMR. The results show that physicochemical properties of the extracts obtained with different magnetic ILs consisting of different cationic rings are different, and pyridine-based magnetic IL is an effective extractant to extract asphaltenes from CDLR among the three magnetic IIs. The extracts might be good precursors for preparing high-value-added carbon materials because of their higher carbon content, lower H/C, and ash content. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25595807