Efficient depolymerization of lignin in supercritical ethanol by a combination of metal and base catalysts

Susan Olivia Limarta, Jeong Myeong Ha, Young Kwon Park, Hyunjoo Lee, Dong Jin Suh, Jungho Jae

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

Abstract

This study investigates the use of combination of metal and solid-base catalysts for effective depolymerization of lignin into monophenol-rich bio-oil in supercritical ethanol through a synergy of base-catalyzed solvolysis and metal-catalyzed hydrogenolysis. The results showed that a combined catalyst of Ru/C and MgO/ZrO2 resulted in a significant decrease in the molecular weight of bio-oil, an increase in the yield of phenolic monomers, and the improved deoxygenation degree of bio-oil compared to the single catalyst condition. The synergic role of metal and base catalysts during lignin depolymerization was examined through comprehensive analysis of reaction products.

Original languageEnglish
Pages (from-to)45-54
Number of pages10
JournalJournal of Industrial and Engineering Chemistry
Volume57
DOIs
StatePublished - 25 Jan 2018

Keywords

  • Catalytic depolymerization
  • Lignin
  • MgO
  • Phenolic monomers
  • Ru/C

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