%0 Journal Article
%T Preparation Method of Pd/Ce0.5Zr0.5O2 Three-Way Catalysts<br>Pd/Ce0.5Zr0.5O2三效催化剂负载方法
%A ZHU Bao-wei
%A CHEN Hong-de
%A TIAN Qun
%A FANG Shi-ping
%A <br>朱保伟
%A 陈宏德
%A 田群
%A 房师平
%J 环境科学
%D 2004
%I 
%X Pd/Ce0.5Zr0.5O2 (CZ) catalysts were prepared by deposition-precipitation (DP), mixing (MIX) and conventional impregnation (IMP) methods, and the effects of the preparation methods on the three-way catalytic behaviors were investigated. Hydrogen temperature-programmed reduction (H2-TPR) and in situ diffuse reflectance infrared fourier transform spectroscopy (DRIFTS) were performed to understand the Pd-support interaction and the three-way catalytic reaction mechanisms. The experiments results reveal that the catalyst prepared by deposition-precipitation (DP) method shows the strongest Pd-support interaction and the best light-off performance. In situ DRIFTS results suggest that there exists alternative route of NO x reduction over Pd-DP catalyst. And it is supposed that Pd-support interaction leads to the difference of reaction mechanism and then the diversity of light-off performances.
%K three-way catalyst
%K deposition-precipitation
%K Pd-support
%K NOx adsorption
%K loading method<br>三效催化剂
%K 沉积沉淀法
%K Pd-载体
%K NOx吸附
%K 负载方法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=60458B8D28AD1FD6&yid=D0E58B75BFD8E51C&vid=C5154311167311FE&iid=B31275AF3241DB2D&sid=659D3B06EBF534A7&eid=C5154311167311FE&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=26