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The hydrogenolysis of biomass-derived glycerol was studied on Ru-Co bimetallic catalysts, including Ru-Co/TiO2, Ru-Co/ZrO2, Ru-Co/SiO2 and Ru-Co/γ-Al2O3. The addition of Co to the Ru-based catalysts can promote the selectivity to 1,2-propanediol (1,2-PDO). The support material and Ru/Co atomic ratio has a significant effect on the catalytic performance. Ru-Co/ZrO2 exhibited the best performance as regard to both the activity and the selectivity to 1,2-PDO. Co is a promising second metal component to adjust the catalytic properties of Ru-based catalysts for the selective hydrogenolysis of glycerol.

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Nano ZnO/graphene composites were prepared by the oxidation of graphite and nano ZnO as the precursors under the condition of water temperature at 120℃. The photocatalytic activity of the composite was detected to treat simulated antibiotic wastewater by using the solution of tetracycline hydrochloride with 300W xenon lamp light source. The optimal conditions for the degradation of the composite material were obtained by single factor test. The optimized conditions were obtained as follows: the amount of catalyst, the time and the pH value was at 20mg, 4 hours and 5 respectively. The degradation rate of the solution of tetracycline hydrochloride could reach 86.7%.