Decomposition of Lignin Using MO–MgAlOy Mixed Oxide Catalysts (M=Co, Ni and Cu) in Supercritical Ethanol

In this study, we performed the depolymerization reaction of concentrated sulfuric acid hydrolysis lignin (CSAHL) in supercritical ethanol without supplying external hydrogen. Cu demonstrated the highest monoaromatic yield of 18.4 wt% among Co, Ni and Cu when incorporated into MgAlO y . With increas...

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Bibliographic Details
Published in:Topics in catalysis 2017-07, Vol.60 (9-11), p.637-643
Main Authors: Jeong, Soyeon, Jang, Gyeong Hun, Kim, Do Heui
Format: Article
Language:English
Subjects:
Catalysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Copper
Depolymerization
Ethanol
Hydrolysis
Industrial Chemistry/Chemical Engineering
Lignin
Nickel
Original Paper
Pharmacy
Physical Chemistry
Sintering
Sulfuric acid
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Summary:In this study, we performed the depolymerization reaction of concentrated sulfuric acid hydrolysis lignin (CSAHL) in supercritical ethanol without supplying external hydrogen. Cu demonstrated the highest monoaromatic yield of 18.4 wt% among Co, Ni and Cu when incorporated into MgAlO y . With increasing the amount of Cu loading, it was found that the optimum Cu loading was 30 wt%, where the number of acid sites had the maximum. In case of CuO–MgAlO y sample with higher Cu loading than 30 wt%, the decrease in the acid sites and the significant sintering of Cu metal during reaction were observed, leading to the decline in the monoaromatic yield.
ISSN:1022-5528
1572-9028
DOI:10.1007/s11244-017-0787-z