Catalytic Total Hydrodeoxygenation of Biomass-Derived Polyfunctionalized Substrates to Alkanes

Yoshinao Nakagawa, Sibao Liu, Masazumi Tamura, Keiichi Tomishige

Research output: Contribution to journalArticlepeer-review

121 Citations (Scopus)


The total hydrodeoxygenation of carbohydrate-derived molecules to alkanes, a key reaction in the production of biofuel, was reviewed from the aspect of catalysis. Noble metals (or Ni) and acid are the main components of the catalysts, and group 6 or 7 metals such as Re are sometimes added as modifiers of the noble metal. The main reaction route is acid-catalyzed dehydration plus metal-catalyzed hydrogenation, and in some systems metal-catalyzed direct C-O dissociation is involved. The appropriate active metal, acid strength, and reaction conditions depend strongly on the reactivity of the substrate. Reactions that use Pt or Pd catalysts supported on Nb-based acids or relatively weak acids are suitable for furanic substrates. Carbohydrates themselves and sugar alcohols undergo C-C dissociation easily. The systems that use metal-catalyzed direct C-O dissociations can give a higher yield of the corresponding alkane from carbohydrates and sugar alcohols.

Original languageEnglish
Pages (from-to)1114-1132
Number of pages19
Issue number7
Publication statusPublished - 2015 Apr 13


  • alkanes
  • biomass
  • carbohydrates
  • hydrogenation
  • ketones


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