Role of Re species and acid cocatalyst on Ir-ReOx/SiO2 in the C-O hydrogenolysis of biomass-derived substrates

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

The catalytic performance of ReOx-modified Ir metal catalyst in the hydrogenolysis of C-O bonds is strongly dependent on the choice of solvent. The acidic property of the Re species becomes obvious in the alkane solvent, and the hydrogenolysis reaction proceeds mainly by acid-catalyzed dehydration and the subsequent metal-catalyzed hydrogenation. The acidic property of the Re species is weakened in water; however, the hydrogenolysis reaction proceeds in water via a direct mechanism involving SN2-like attack of a hydride species at the interface between Ir and ReOx on the adsorbed Re alkoxide species. This mechanism enabled the selective dissociation of the C-O bond neighboring the CH2OH group.

Original languageEnglish
Pages (from-to)1041-1054
Number of pages14
JournalChemical Record
Volume14
Issue number6
DOIs
Publication statusPublished - 2014 Aug 6

Keywords

  • Heterogeneous catalysis
  • Hydrogenolysis
  • Iridium
  • Rhenium
  • Supported catalysts

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Chemical Engineering(all)
  • Materials Chemistry

Fingerprint

Dive into the research topics of 'Role of Re species and acid cocatalyst on Ir-ReO<sub>x</sub>/SiO<sub>2</sub> in the C-O hydrogenolysis of biomass-derived substrates'. Together they form a unique fingerprint.

Cite this