Abstract
A series of bimetallic Cu samples (Cu–Pt/SiO2, Cu–Pd/SiO2, Cu–Ag/SiO2, Cu–Ni/SiO2) were prepared by wetness impregnation method, then investigated for hydrogenolysis of glycerol to 1,2-propanediol (1,2-PDO). We furthered the study and found that Cu–Pt/SiO2 got the smallest particle size and greatest dispersion. Besides, it was found that Pt promoted reduction of Cu2+. Compared with other Cu–Pt molar ratio, Cu–Pt/SiO2 (1:0.2) was the preferable catalyst for hydrogenolysis of glycerol to 1,2-PDO. It is worth noting that Cu–Pt/SiO2 presented the highest activity with a 96 % selectivity to 1,2-PDO and a nearly 100 % conversion of glycerol at 473 K, 40 bar initial H2 pressure, 12 h, which is much higher activity than monometallic Cu/SiO2, Pt/SiO2 and other bimetallic Cu samples. Meanwhile, the used Cu–Pt/SiO2 catalyst still preformed high activity. Furthermore, it was found that the presence of Pt decreased the aggregation of particles during the hydrogenolysis of glycerol.
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We gratefully acknowledge financial support from the National Natural Science Foundation of China (Nos. 21571047, 21371044) and the Program for New Century Excellent Talents in University of the Chinese Ministry of Education (NCET-11-0627).
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Kang, Y., Bu, X., Wang, G. et al. A Highly Active Cu–Pt/SiO2 Bimetal for the Hydrogenolysis of Glycerol to 1,2-Propanediol. Catal Lett 146, 1408–1414 (2016). https://doi.org/10.1007/s10562-016-1766-x
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DOI: https://doi.org/10.1007/s10562-016-1766-x