以浸渍法制备Ru/Al2O3催化剂，研究在高压反应釜中Ru/Al2O3上催化加氢邻苯二甲酸二丁酯（DBP）合成1,2-环己烷二甲酸二丁酯（CDADE）。采用 X 射线衍射（XRD）、H2程序升温还原（H2-TPR）、扫描电镜（SEM）、X射线能谱仪（EDS）和透射电子显微镜（TEM）对催化剂进行表征。结果表明，Ru负载量为3.0%（质量分数），200℃氢气气氛中还原的Ru/Al2O3催化剂，在催化DBP合成CDADE的反应中具有较高的催化活性。在反应温度80℃、反应压力2.0～2.5 MPa和搅拌转速800 r/min下，DBP转化率和CDADE选择性分别达到99.972%和99.904%，催化剂重复使用9次后仍有较高活性，但继续使用，由于活性组分Ru部分流失、团聚和催化剂表面积炭，催化剂活性有所下降。%Ru/Al2O3 catalysts were prepared by the impregnation method and catalytic hydrogenation of dibutyl phthalate to cyclohexane 1,2-dicarboxylic acid dibutyl ester was carried out in a high pressure reactor. The samples were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), H2 temperature-programmed reduction(H2-TPR), energy dispersive spectrometer(EDS) and transmission electron microscope(TEM). The results showed that Ru/Al2O3 catalyst with Ru loading of 3% exhibited excellent catalytic performance when reduced at 200℃. The dibutyl phthalate conversion and 1,2-dicarboxylic acid dibutyl ester selectivity reached 99.904 % and 99.972 %, respectively, under the conditions of 80℃, 2.0-2.5 MPa and stirring speed of 800 r/min. Ru/Al2O3 catalyst showed the catalytic stability till reuse nine times. The deactivation of Ru/Al2O3 catalysts was mainly due to the loss and aggregation of Ru and carbonization over catalysts surface.
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