Reaction kinetics of stover liquefaction in recycled stover polyol

Fei Yu, Roger Ruan, Xiangyang Lin, Yuhuan Liu, Rong Fu, Yuhong Li, Paul Chen, Yinyu Gao

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


The purpose of this research was to study the kinetics of liquefaction of crop residues. The liquefaction of corn stover in the presence of ethylene glycol and ethylene carbonate using sulfuric acid as a catalyst was studied. It was found that the liquefaction yield was a function of ratio of solvent to corn stover, temperature, residence time, and amount of catalyst. Liquefaction of corn stover was conducted over a range of conditions encompassing residence times of 0-2.5 h, temperatures of 150-170°C, sulfuric acid concentrations of 2-4% (w/w), and liquefaction reagent/corn stover ratio of 1-3. The liquefaction rate constants for individual sets of conditions were examined using a first-order reaction model. Rate constant increased with the increasing of liquefaction temperature, catalyst content, and liquefaction reagent/corn stover ratio. Reuse of liquefied biomass as liquefying agent was also evaluated. When using recycled liquefied biomass instead of fresh liquefaction reagent, the conversion is reduced. It appeared that 82% of liquefaction yield was achieved after two times of reuse.

Original languageEnglish (US)
Pages (from-to)563-573
Number of pages11
JournalApplied Biochemistry and Biotechnology
Issue number1-3
StatePublished - 2006

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.


  • Corn stover
  • Ethylene carbonate
  • Ethylene glycol
  • Liquefaction
  • Polyol


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