Catalytic roles of metals and supports on hydrodeoxygenation of lignin monomer guaiacol

Hydrodeoxygenation of the lignin monomer guaiacol was performed on the bifunctional catalysts of noble-metals supported on acidic matrices. The catalytic roles of metal nanoparticles and acidic supports were elucidated using the acid-site-measurement-dependent catalysis results, which demonstrated t...

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Bibliographic Details
Published in:Catalysis communications 2012-01, Vol.17, p.54-58
Main Authors: Lee, Cho Rim, Yoon, Ji Sun, Suh, Young-Woong, Choi, Jae-Wook, Ha, Jeong-Myeong, Suh, Dong Jin, Park, Young-Kwon
Format: Article
Language:English
Subjects:
Biomass
Catalyst
Guaiacol
Hydrodeoxygenation
Lignin
Rh/SiO 2-Al 2O 3
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Summary:Hydrodeoxygenation of the lignin monomer guaiacol was performed on the bifunctional catalysts of noble-metals supported on acidic matrices. The catalytic roles of metal nanoparticles and acidic supports were elucidated using the acid-site-measurement-dependent catalysis results, which demonstrated that metals were responsible for the hydrogenation of aromatic rings while metal-deposited acidic supports were indispensable to the deoxygenation of oxygenates. Among various combinations of metals and supports, Rh/SiO 2-Al 2O 3 and Ru/SiO 2-Al 2O 3 exhibited the highest cyclohexane yields. [Display omitted] ► Catalytic hydrodeoxygenation of lignin monomer guaiacol to cyclohexane. ► Combinations of noble metals and acidic supports for bifunctional catalysts. ► Product distribution analysis on various catalysts. ► Acidity of catalysts is measured by NH 3-TPD. ► Hydrodeoxygenation depends more on catalyst acidity. ► The reaction pathway of guaiacol to cyclohexane is suggested.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2011.10.011