Preparation of furans from catalytic conversion of corn stover in H2O–THF co-solvent system – The effects of acids combined with alkali metal cations

Xiaowei Fang, Ze Wang*, Wenli Song, Songgeng Li, Weigang Lin

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The preparation of furans from catalytic conversion of corn stover is investigated in H2O–THF (tetrahydrofuran) co-solvent system, and the effects of Bronsted acids (H2SO4, HCl, HNO3) combined with alkali metal cations (Li+, Na+, K+) are studied systematically. It is found that the effect of individual acid in promoting the summary yield of 5-hydroxymethylfurfural (HMF) and furfural (FF) can be ordered as Cl > SO42− > NO3. When combined with a salt, the anion effect can be ranked in SO42− > Cl > NO3, both for the HMF yield and the summary yield of furans. Based on the best anion of SO42−, the impacts of the combined cations can be finely ranked as Na+ > K+ > Li+. For the system with Cl, it ranks in K+ > Li+ > Na+ for the HMF yield or the summary yield of furans. The performance of NO3 is so poor that no liquid product can be detected when any alkali metal cations is combined with HNO3. The performance of H2SO4/Na2SO4 is the best among 9 tested combined catalysts, and the yield of HMF and FF from corn stover conversion under optimized conditions are 76% and 81% respectively.
Original languageEnglish
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume97
Pages (from-to)105-111
ISSN1876-1070
DOIs
Publication statusPublished - 2019

Keywords

  • Alkali metal salts
  • Acid
  • Corn stover
  • Furans
  • H2O–THF co-solvent system

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