Abstract
The gas phase hydrogenation of acrolein, 2-methyl-2-propenal, 2-butenal and 3-methyl-2-butenal was studied on Ru/Al2O3 and RuM/Al2O3 catalysts (M=Sn, Fe, Zn, Ge, Sb). The specific activity increases when the second element is added to the parent Ru/Al2O3 catalyst. This was ascribed to the activation of the C=O bond by Mδ+ species. Tin is the only additive which promotes the allyl alcohol selectivity. When methyl groups are tagged on the C=C bond the selectivity to the unsaturated alcohol increased sharply due to the steric hindrance against the adsorption of the substrate via the C=C double bond.
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Coq, B., Figuéras, F., Moreau, C. et al. Hydrogenation of substituted acrolein over alumina supported ruthenium catalysts. Catal Lett 22, 189–195 (1993). https://doi.org/10.1007/BF00810365
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DOI: https://doi.org/10.1007/BF00810365