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Hydrodeoxygenation of benzyl alcohol on transition-metal-containing mixed oxides catalysts derived from layered double hydroxide precursors

Abstract : M-MgAlO mixed oxide catalysts were prepared by controlled thermal decomposition of layered double hydroxides (LDH) precursors and were tested in the hydrodeoxygenation of benzyl alcohol. LDH with Mg/Al = 3 and 10 at. % M with respect to cations (M = Mn, Fe, Co, Ni, Cu and Zn) were obtained by coprecipitation. A second series of copper-containing catalysts with copper content from 5 to 20 at. % was also prepared. The solids were characterized by X-ray diffraction, N2 adsorption/desorption, temperature-programmed reduction in H2 atmosphere, temperature-programmed desorption of CO2. The influence of the transition metal and, for the copper-containing samples, of the copper loading, reaction temperature, reaction time, amount of catalyst and reduction pre-treatment on the catalytic performance were investigated. With 97% alcohol conversion and 96% selectivity to toluene, Cu15MgAlO is the best hydrodeoxygenation catalyst. It was also tested in the hydrodeoxygenation of 1-heptanol.
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Submitted on : Monday, March 15, 2021 - 1:54:56 PM
Last modification on : Friday, December 3, 2021 - 11:43:31 AM
Long-term archiving on: : Wednesday, June 16, 2021 - 6:50:03 PM

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Claudiu Rizescu, Chao Sun, Ionel Popescu, Adriana Urdă, Patrick da Costa, et al.. Hydrodeoxygenation of benzyl alcohol on transition-metal-containing mixed oxides catalysts derived from layered double hydroxide precursors. Catalysis Today, Elsevier, 2021, 366, pp.235-244. ⟨10.1016/j.cattod.2020.04.055⟩. ⟨hal-03169517⟩

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