Pt-Rh-Pd/Al_2O_3三元催化剂的制备及其表征  

Preparation and Characterization of Pt-Rh-Pd/Al_2O_3 Three Way Catalyst

作　　者：旷成秀[1] 刘康强[1] 李凤仪[2] 

机构地区：[1]九江学院化学与环境学院,江西九江332005 [2]南昌大学应用化学研究所,南昌330047

出　　处：《贵金属》2013年第1期17-20,24,共5页Precious Metals

摘　　要：应用共浸渍法和分层浸渍法制得了Pt-Rh-Pd/Al2O3催化剂,程序升温脱附(TPD)和X射线衍射(XRD)对催化剂的催化活性进行了表征。结果表明,共浸渍法制得的Pt-Rh-Pd/Al2O3催化剂的催化性能优于分层浸渍法制得的Pt-Rh-Pd/Al2O3催化剂。这可能与Pt-Pd-Rh/Al2O3催化剂的催化过程符合Langmuir-Hinshelwood历程有关。Pt-Rh-Pd/A1203 catalysts were prepared with methods of successive impregnation and co-impregnation, and catalytic activities were characterized by temperature programmed desorption （TPD） and X-ray diffraction （XRD）. The results showed that the Pt-Rh-Pd/A1203 catalyst prepared by co-impregnation is superior to the catalyst prepared by successive impregnation. It was attributed to the catalytic mechanisms accorded with the Langmuir-Hinshelwood.

关 键 词：金属材料 贵金属 催化剂 

分 类 号：O643.361[理学—物理化学]