Abstract
Hydrodeoxygenation of stearic acid on Ni/ZrO2 to n-heptadecane occurs via the reduction to 1-octadecanal, followed by decarbonylation of the aldehyde to n-heptadecane. Stearic acid binds stronger than 1-octadecanal on Ni, causing decarbonylation to start only once stearic acid is almost fully converted. This first step is enhanced by addition of Cu either in the form of Cu/ZrO2 or in the form of a ZrO2 supported NixCu1-x nano-alloy. Cu has not only a higher activity for the reduction of stearic acid, it also increases the activity of Ni for decarbonylation of 1-octadecanal by increasing the electron density of Ni in the bimetal catalyst. The combination of these two effects leads to high activity of Ni-Cu bimetallic catalysts.
Original language | English |
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Pages (from-to) | 2620-2629 |
Number of pages | 10 |
Journal | Catalysis Science and Technology |
Volume | 9 |
Issue number | 10 |
DOIs | |
State | Published - 2019 |