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Direct conversion of tetrahydrofurfuryl alcohol, which is one of the biomass-derived chemicals, to 1,5-pentanediol was realized by chemoselective hydrogenolysis catalyzed by Rh/SiO(2) modified with ReO(x) species, and this reaction route gave higher yield than the conventional multi-step method.

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Glycerol is a main byproduct in a biodiesel production process, and the effective utilization of glycerol can contribute to the biodiesel promotion. One of the methods is catalytic conversion of glycerol to valuable chemicals, and this can also agree with the concept of green chemistry in terms of the utilization of renewable resources. Catalytic performance of supported metal catalysts (metal: Rh, Ru, Pt, Pd support: active carbon, SiO 2 , Al 2 O 3) was evaluated in the reaction of glycerol aqueous solution under H 2. It is found that Rh/SiO 2 exhibited higher activity and higher selectivity to hydrogenolysis products such as propanediols and propanols than Ru/C catalysts at low temperature (393 K). We also investigated the additive effect of ion-exchange resin (Amberlyst). Regarding the reaction route in the reaction of glycerol, it is suggested that the consecutive hydrogenolysis of propanediols to propanols on Rh/SiO 2 can proceed via 1,2-propanediol, while it can proceed on Ru/C via 1,3-propanediol.

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