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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

The first review on HDO was published in 1983.[2] 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.[3]


  1. ^ Henrik Topsøe, Bjerne S. Clausen, Franklin E. Massoth "Hydrotreating Catalysis" Springer, 1996. ISBN 3540603808.
  2. ^ Furimsky, Edward (2000-06-12). "Catalytic hydrodeoxygenation". Applied Catalysis A: General. 199 (2): 147–190. doi:10.1016/S0926-860X(99)00555-4. 
  3. ^ "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. doi:10.1002/jctb.3775/abstract (inactive 2017-08-27). Retrieved 2015-06-01.