Pd/Hβ-zeolite catalysts for catalytic combustion of toluene:Effect of SiO_2/Al_2O_3 ratio

查看全文 作　　者：Zekai [1]Zhang;Longya [2]Xu;Zhanlong [1]Wang;Yujuan [1]Xu;Yinfei [1]Chen

机构地区：[1]College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China;[2]Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China

出　　处：《Journal of Natural Gas Chemistry》索引2010年第19卷第4期,共5页

基　　金：supported by the Natural Science Foundation of China(Granted No.20903080);the Science and Technology Planning Project of Zhejiang Province of China(Granted No.2008C13053) 摘　　要：The effect of pure and high silica Hβ zeolites on the catalytic performance of toluene combustion over Pd/Hβ catalyst was evaluated.Pure and high silica β zeolites were prepared by direct synthesis procedures,then 0.1 wt% of palladium was impregnated on different Hβ zeolites via in-cipient wetness technique using palladium nitrate as the Pd source.The Pd/Hβ catalysts were characterized by XRD,N2 adsorption/desorption,H2O adsorption,NH3-TPD,H2-TPR and XPS techniques.With increasing the SiO2/Al2O3 ratio of β zeolite,the activity of the Pd/Hβ catalysts for toluene combustion increased clearly and the pure silica β zeolite supported Pd catalyst showed the best catalytic activity.The superior catalytic performance of Pd/β catalyst prepared from pure silica β zeolite was attributed to its high hydrophobicity and the preserving ability for PdO active species. 关键词：沸石催化剂催化燃烧硝酸钯硅铝比甲苯程序升温脱附 PD催化剂分子筛负载

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Pd/Hβ-zeolite catalysts for catalytic combustion of toluene:Effect of SiO_2/Al_2O_3 ratio

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