Fractionation of lignin from eucalyptus bark using amine-sulfonate functionalized ionic liquids

Fractionation of lignin from eucalyptus bark using amine-sulfonate functionalized ionic liquids

A series of amine-sulfonate functionalized ionic liquids (ASF-ILs) were synthesized, characterized, and evaluated for the dissolution of model biopolymers (cellulose, xylan, kraft lignin and lignosulfonate). The ASF-ILs were prepared in high atomic efficiency. Most of the ASF-ILs dissolve kraft lign...

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Veröffentlicht in:Green chemistry : an international journal and green chemistry resource : GC 2015-01, Vol.17 (11), p.4913-4920
Hauptverfasser: Yan, Peifang, Xu, Zhanwei, Zhang, Chao, Liu, Xiumei, Xu, Wenjuan, Zhang, ZConrad
Format: Artikel
Sprache:eng
Schlagworte:
Bark
Cellulose
Dissolution
Distillation
Eucalyptus
Ionic liquids
Lignosulfonates
Pretreatment
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Zusammenfassung:A series of amine-sulfonate functionalized ionic liquids (ASF-ILs) were synthesized, characterized, and evaluated for the dissolution of model biopolymers (cellulose, xylan, kraft lignin and lignosulfonate). The ASF-ILs were prepared in high atomic efficiency. Most of the ASF-ILs dissolve kraft lignin and lignosulfonate efficiently at 373 K, with solubilities of 0.220-0.385 g for kraft lignin and of 0.150-0.290 g for lignosulfonate per gram of ASF-ILs. In contrast, xylan and cellulose are scarcely soluble (
ISSN:1463-9262
1463-9270
DOI:10.1039/c5gc01035g