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Mechanistic investigation of the Zn/Pd/C catalyzed cleavage and hydrodeoxygenation of lignin.
- Source :
- Green Chemistry; 4/21/2016, Vol. 18 Issue 8, p2399-2405, 7p
- Publication Year :
- 2016
-
Abstract
- While current biorefinery processes use lignin only for its heat value, the conversion of lignin to high value chemicals is an area of increasing interest. Herein we present a detailed mechanistic study of the hydrodeoxygenation (HDO) of lignin by using a synergistic Pd/C and Zn<superscript>II</superscript> catalyst through use of both lignin model compounds and lignocellulosic biomass. Spectroscopic data coupled with the study of lignin model compounds suggest that Zn<superscript>II</superscript> activates and facilitates removal of the hydroxyl group at the Cγ position of the β-O-4 ether linkage. Activation is proposed to occur through formation of a six-membered ring complex of Zn<superscript>II</superscript> coordinated to the oxygen atoms at Cα and Cγ of the lignin model compound guaiacylglycerol-β-guaiacyl. [ABSTRACT FROM AUTHOR]
- Subjects :
- BIOMASS energy equipment
LIGNINS
LIGNOCELLULOSE
BIOMASS
HYDROXYL group
Subjects
Details
- Language :
- English
- ISSN :
- 14639262
- Volume :
- 18
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Green Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 114612284
- Full Text :
- https://doi.org/10.1039/c5gc01325a