Hydrogenation of levulinic acid to γ-valerolactone by Ni and MoOₓ co-loaded carbon catalysts
2014
Shimizu, Ken-ichi | Kanno, Shota | Kon, Kenichi
To develop a noble metal-free heterogeneous catalyst for liquid phase hydrogenation of levulinic acid to γ-valerolactone under H₂, we tested a series of base-metal (Ni, Co, Cu, and Fe) and metal oxides (Mo, V, and W oxides) co-loaded carbon (C) and Ni-loaded metal oxides for the reaction. Ni–MoOₓ/C pre-reduced at 500 °C showed the highest activity and showed more than 300 times higher turnover number (TON) than previously reported noble metal-free catalysts. A structure–activity relationship study showed that the co-presence of metallic Ni⁰ species and partially reduced MoO₂ could be responsible for the high activity.
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