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Catalytic delignification of sugarcane bagasse in the presence of acidic ionic liquids

Paper ID Volume ID Publish Year Pages File Format Full-Text
55263 47045 2013 7 PDF Available
Title
Catalytic delignification of sugarcane bagasse in the presence of acidic ionic liquids
Abstract

Lignin is one of main components in the most abundant lignocelluloses and is recognized as a unique renewable natural resource for the synthesis of aromatic chemicals. Its isolation and transformation have thereby attracted increasing attention in recent times. Here, an efficient method for the separation of lignin from sugarcane bagasse is reported using acidic ionic liquid catalysts. The structure and physicochemical properties and the molecular weight distribution of the isolated lignin were characterized by FT-IR, 1H NMR and 13C NMR, TG, elemental analysis, UV–vis, SEM and GPC. The results showed that acid functionalized ionic liquids are excellent catalysts for the delignification of sugarcane bagasse: 100% isolation of the desired product was achieved under optimized conditions.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (112 K)Download as PowerPoint slideHighlights► Acidic ILs used as catalysts in the delignification of sugarcane bagasse. ► 100% isolation yield of lignin obtained at 200 °C for 30 min. ► Delignification performance depend greatly on the acidic strength of the IL. ► The isolated lignin was characterized by FT-IR, NMR, TG, EA, SEM, UV–vis and GPC. ► 70% degree of liquefaction of isolated lignin achieved in subcritical water.

Keywords
Bagasse; Delignification; Ionic liquids; Lignin; Liquefaction
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Catalytic delignification of sugarcane bagasse in the presence of acidic ionic liquids
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 200, 1 February 2013, Pages 99–105
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us