Selective primary alcohol oxidation of lignin streams from butanol-pretreated agricultural waste biomass

Isabella Panovic, Christopher S. Lancefield, Darren Phillips, Mark J. Gronnow, Nicholas J. Westwood*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)
9 Downloads (Pure)

Abstract

Chemically modified lignins are important for the generation of biomass-derived materials and as precursors to renewable aromatic monomers. A butanol-based organosolv pretreatment has been used to convert an abundant agricultural waste product, rice husks, into a cellulose pulp and three additional product streams. One of these streams, a butanol-modified lignin, was oxidized at the γ position to give a carboxylic acid functionalized material. Subsequent coupling of the acid with aniline aided lignin characterization and served as an example of the flexibility of this approach for grafting side chains onto a lignin core structure. The pretreatment was scaled up for use on a multi-kilogram scale, a development that enabled the isolation of an anomeric mixture of butoxylated xylose in high purity. The robust and scalable butanosolv pretreatment has been developed further and demonstrates considerable potential for the processing of rice husks.

Original languageEnglish
Pages (from-to)542-548
Number of pages7
JournalCHEMSUSCHEM
Volume12
Issue number2
Early online date9 Jan 2019
DOIs
Publication statusPublished - 24 Jan 2019

Keywords

  • Biomass
  • Green chemistry
  • Lignin
  • Oxidation
  • Sustainable chemistry

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