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Hydrodeoxygenation (HDO) is a hydrogenolysis process for removing oxygen from oxygen containing compounds. Typical HDO catalysts commonly are sulfided nickel-molybdenum or cobalt-molybdenum on gamma alumina. An idealized reaction is:[1]

R2O + 2 H2 → H2O + 2 RH

HDO is potentially of interest for producing biofuels, which are derived from oxygen-rich precursors like sugars or lipids. Because of high capital and transportation costs, HDO is not commercially feasible for the deoxygenation of biomass-derived feedstocks. Instead, deoxygenation of biomass typically involve dehydration and decarboxylations.[2]


  1. ^ Henrik Topsøe, Bjerne S. Clausen, Franklin E. Massoth "Hydrotreating Catalysis" Springer, 1996. ISBN 3540603808.
  2. ^ "Catalytic deoxygenation of fatty acids and their derivatives to hydrocarbon fuels via decarboxylation/decarbonylation - Santillan-Jimenez - 2012 - Journal of Chemical Technology and Biotechnology - Wiley Online Library". onlinelibrary.wiley.com. Retrieved 2015-06-01.