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Pt-Rh-Pd/Al₂O₃三元催化剂的制备及其表征

Preparation and Characterization of Pt-Rh-Pd/Al₂O₃ Three Way Catalyst

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【Author】 KUANG Chengxiu1,LIU Kangqiang1,LI Fengyi2(1.Department of Chemistry and Environment,Jiujiang University,Jiujiang 332005,Jiangxi,China;2.Institute of Applied Chemistry,Nanchang University,Nanchang 330047,China)

【机构】九江学院化学与环境学院；南昌大学应用化学研究所；

【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。更多还原

【Abstract】 Pt-Rh-Pd/Al2O3 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/Al2O3 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.更多还原