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以USY为载体制备了一系列不同Cu和MgO负载量的酸碱双功能催化剂Cu-MgO/USY用于甘油氢解制丙二醇反应,并采用X射线粉末衍射、透射电镜、傅里叶红外光谱、NH3程序升温脱附等手段对该催化剂进行了表征.结果表明,负载后的USY载体其Y沸石特征峰保持完整,且MgO的加入提高了Cu在载体表面的分散度.在200 oC,3.5 MPa H2下反应10 h以及6%催化剂0.2Cu-MgO/USY(0.2 g Cu与1.0 g MgO负载于1.0 g USY上面)用量的条件下,甘油转化率达到83.6%,1,2-丙二醇及1,3-丙二醇的选择性分别为40%和19.4%.
A series of Cu-MgO / USY catalysts with different Cu and MgO loadings were prepared with USY as carrier. The catalysts were used for the glycerol hydrogenolysis of propylene glycol. X-ray powder diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, NH3 temperature desorption and other means of the catalyst were characterized.The results show that after loading the USY carrier Y zeolite characteristic peak remains intact, and the addition of MgO increased the dispersion of Cu in the carrier surface.At 200 oC, 3.5 MPa H2 under the reaction of 10 h and 6% of the catalyst 0.2Cu-MgO / USY (0.2 g Cu and 1.0 g MgO supported on 1.0 g USY above) the amount of glycerol conversion rate of 83.6%, 1,2-propanediol and 1, Selectivity for 3-propanediol was 40% and 19.4%, respectively.