ZrO_2对Cu/Al_2O_3-ZrO_2催化剂糠醛选择加氢活性的影响  

Effect of ZrO_2 on the Selective Hydrogenation of Furfural Over Cu/Al_2O_3-ZrO_2 Catalysts

作　　者：李锋[1] 汪淑影[1] 李瑞峰[2] 宋华[1] 

机构地区：[1]东北石油大学化学化工学院,黑龙江大庆163318 [2]大庆化工研究中心,黑龙江大庆163714

出　　处：《石油学报（石油加工）》2011年第2期187-191,共5页Acta Petrolei Sinica(Petroleum Processing Section)

摘　　要：采用共沉淀法制备了Al2O3-ZrO2复合氧化物,并以它为载体,浸渍法制备Cu质量分数为24%的负载型Cu基催化剂。运用X射线衍射(XRD)、H2程序升温还原(H2-TPR)、X射线能谱(XPS)对载体和催化剂进行表征,并考察了ZrO2对Cu/Al2O3-ZrO2催化剂糠醛选择加氢活性的影响。结果表明,载体中ZrO2质量分数20%的Cu/Al2O3-ZrO2催化剂对糠醛的选择加氢活性最高。与Cu/Al2O3催化剂相比,添加ZrO2可以提高Cu/Al2O3-ZrO2催化剂加氢活性,并有效提高较高反应温度下的糠醇选择性。The Al2O3-ZrO2 composite oxides were prepared by coprecipitation and Cu-based catalysts with mass fraction 24% copper and Al2O3-ZrO2 as support were prepared by impregnation.The supports and the catalysts were characterized by X-ray diffraction（XRD）,H2 temperature-programmed reduction（H2-TPR）,X-ray photoelectron（XPS）.The effect of ZrO2 on the activity of Cu/Al2O3-ZrO2 for selective hydrogenation of furfural was evaluated.The results showed that the Cu/Al2O3-ZrO2 catalysts with 20% mass fraction of ZrO2 in support exhibited the highest activity for selective hydrogenation of furfural.The presence of ZrO2 in Cu/Al2O3-ZrO2 catalyst can increase the activity of the catalyst for selective hydrogenation of furfural and effectively enhance the selectivity of furfuryl alcohol at high temperature,in comparison with the Cu/Al2O3 catalyst.

关 键 词：ZRO2 Cu/Al2O3-ZrO2 糠醛 选择加氢 

分 类 号：O643.36[理学—物理化学]