Influences of Platinum Precursors and Solution Acidities on REO-Based Catalysts Performances
来源期刊：Journal of Rare Earths2006年第S1期
论文作者：张爱敏 宁平
文章页码：39 - 41
摘 要：<正>Important effects exist between precious metals and rare earths oxides in three-way catalyst, especially the coordinated effects. These effects were studied by using H2PtCl6, Pt（NH3）2（NO2）2 and Pt（OH）2（C2H5ONH2）2 as Pt precursors, and the mixed oxide of （Ce-Zr-La-Pr）O as base material to prepare a series of catalysts, and their performances of the catalysts were studied by TPR and CO pulse titration technologies. The results shown that Pt precursors and their solutions pH values influenced the oxygen storage capabilities, the active metal distribution degrees of the catalysts obviously, and every catalyst prepared by different precursors had an optimal pH values. It indicates that the active metals precursors and their solutions acidities have outstanding influences on the catalysts performances for the mutual effects existing between the active metals and the Rare Earth metal oxides, which results from the mate groups of the precursors and the solution acidity.
张爱敏，宁平
摘 要：<正>Important effects exist between precious metals and rare earths oxides in three-way catalyst, especially the coordinated effects. These effects were studied by using H2PtCl6, Pt（NH3）2（NO2）2 and Pt（OH）2（C2H5ONH2）2 as Pt precursors, and the mixed oxide of （Ce-Zr-La-Pr）O as base material to prepare a series of catalysts, and their performances of the catalysts were studied by TPR and CO pulse titration technologies. The results shown that Pt precursors and their solutions pH values influenced the oxygen storage capabilities, the active metal distribution degrees of the catalysts obviously, and every catalyst prepared by different precursors had an optimal pH values. It indicates that the active metals precursors and their solutions acidities have outstanding influences on the catalysts performances for the mutual effects existing between the active metals and the Rare Earth metal oxides, which results from the mate groups of the precursors and the solution acidity.
关键词：
