A series of CuO/SiO₂ catalysts containing different modifiers were prepared via co-precipitation and used for glycerol hydrogenolysis. CuO–CeO₂/SiO₂ gave the best glycerol conversion rate (100%) and highest selectivity for 1,2-propanediol (up to 95%). Reactions were carried out under the following conditions: temperature, 220°C; H₂ pressure, 0.5 MPa; glycerol concentration, 100 wt.%; and H₂/glycerol molar ratio, 35:1. The catalysts were characterised by X-ray diffraction, NH₃ temperature-programmed desorption, N₂ adsorption, and scanning electron microscopy. The CuO–CeO₂/SiO₂ catalyst had smaller particle sizes, better dispersion, and greater specific surface area than the CuO/SiO₂, CuO–phosphotungstic acid (PTA)/SiO₂, and CuO–CeO₂–PTA/SiO₂ catalysts.

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Synthesis, characterisation, and evaluation of stable, efficient modified nanocopper-based glycerol hydrogenolysis catalysts

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