Reduction of CuO into Cu with guaiacol as a model compound of lignin with a homogeneous catalyst of NaOH

Guodong Yin, Zhibao Huo, Xu Zeng, Guodong Yao, Zhenzi Jing, Fangming Jin

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9 Citations (Scopus)

Abstract

The reduction of CuO with a lignin model compound, guaiacol, is investigated, to develop a new and green method for both Cu smelting and the utilization of lignin. The results showed that CuO can be completely reduced into Cu and guaiacol selectively converted to carboxylic acids such as fumaric, maleic, acetic, and formic acids at a mild temperature of 250 °C. The presence of NaOH has a significant effect on enhancing the reduction of CuO and the selective yield of carboxylic acids. Two possible reaction pathways were proposed for the reduction of CuO with guaiacol. One pathway involves the oxidative decomposition of guaiacol into carboxylic acids. The other reaction pathway proceeds with the polymerization of guaiacol into oligomers, which can be reused for CuO reduction due to their easy hydrolyzation to monomers under hydrothermal conditions.

Original languageEnglish
Pages (from-to)7856-7865
Number of pages10
JournalIndustrial and Engineering Chemistry Research
Volume53
Issue number19
DOIs
Publication statusPublished - 2014 May 14

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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