Synthesis and characterization of nickel(II) homogeneous and supported complexes for the hydrogenation of furfural to furfuryl alcohol

Menala Kalumpha, Leah Charlie Matsinha, Banothile C.E. Makhubela

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Nickel(II) complexes have been synthesized and characterized using nuclear magnetic resonance (NMR), infrared spectroscopy, high resolution mass spectroscopy, and elemental analysis. The complexes were evaluated as pre-catalysts in the direct hydrogenation of furfural to furfuryl alcohol. The pre-catalysts C1 and C4 gave higher furfural conversion (97% and 96%, respectively), as a result, they were also evaluated in the transfer hydrogenation of furfural using formic acid as the hydrogen source where higher furfural conversion (93%) was obtained and selectivity (100%) toward the formation of furfuryl alcohol at 4 h. The catalyst C1 was recycled three times with and it was observed that the catalytic activity might be due to a mixture of both molecular catalysis and nanoparticles, as evidenced by the decrease in activity in mercury poisoning experiments. The hydrogenation reactions were also extended to alpha-β unsaturated substrates and were selective toward saturation of the carbonyl functionality over alkene groups.

Original languageEnglish
Article number684
JournalCatalysts
Volume11
Issue number6
DOIs
Publication statusPublished - Jun 2021

Keywords

  • Catalytic hydrogenation
  • Furfural
  • Furfuryl alcohol
  • Ni(II) catalysts

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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