【摘要】 采用沉淀沉积法制备了Ru基催化剂,研究了Al₂O₃载体、Ru负载量、助剂种类以及助剂负载量对于固定床反应器中对苯二甲酸二甲酯（DMT）加氢效果的影响。采用XRD,TEM,H₂-TPR等手段对催化剂进行了表征。实验结果表明,适宜的载体比表面积须大于200 m²/g,适宜的Ru负载量为3%（w）,助剂对催化剂性能有显著影响。当Ru为活性组分,W为助剂时,DMT的转化率和1,4-环己烷二甲酸二甲酯的选择性达到最高,分别可达96.8%和95.1%,最后考察了催化剂的稳定性。更多还原

【Abstract】 A series of Ru-based catalysts were prepared by using the deposition-precipitation method.The effect of various factors,such as Al₂O₃ support,Ru loading amount,type of promoters and their loading amount,on the hydrogenation of dimethyl terephthalate in the fixed bed reactor was investigated.A variety of techniques,such as XRD,TEM,and H₂-TPR,were employed to characterize the catalysts.The test results show that the appropriate specific surface area of the support must be greater than 200 m²/g,the appropriate Ru loading amount is 3%（w）,and the promoter has a significant effect on the performance of catalyst.When Ru is the active component and W is the promoter,the conversion of dimethyl terephthalate and the selectivity of dimethyl 1,4-cyclohexanedicarboxylate can hit high points of 96.8% and 95.1%,respectively.Furthermore,the stability of the catalyst was investigated.更多还原