Conversion of acetone and/or alcohol(s) to alcohol(s) and/or aliphatic hydrocarbons

A process for the production of a saturated or unsaturated aliphatic alcohol product and/or a saturated or unsaturated aliphatic hydrocarbon, the process comprising:

• converting an alcohol reactant to acetone;
• condensing the acetone in the presence of first and second catalysts to form one or more carbonyl compounds, the first catalyst being different from the second catalyst, and the second catalyst being either unsupported or supported on a catalyst support, the catalyst support being different from the first catalyst, and the second catalyst comprising:
• a transition metal catalyst comprising a transition metal selected from the group consisting of Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and combinations thereof, or
• a zeolite catalyst;
• hydrogenating and/or hydrodeoxygenating at least one of the one or more carbonyl compounds to form the saturated or unsaturated alcohol product and/or the saturated or unsaturated hydrocarbon.