Study of the pretreatment chemistry and thermal stability of zirconia supported Ru-Pt catalysts
作者： Juan R. González-Velasco , Miguel A. Gutiérrez-Ortiz , José A. González-Marcos , Pavol Pranda , Pavol Steltenpohl
关键词: Heterogeneous catalysis 、 Bimetallic strip 、 Catalysis 、 Chemistry 、 Platinum 、 Ruthenium 、 Adsorption 、 Cubic zirconia 、 Chemisorption 、 Inorganic chemistry
摘要: Abstract The behavior of zirconia supported Ru and/or Pt catalysts in conditions TPReduction and pulse chemisorption is studied. In order to understand the process precursor decomposition, several prepared by either (co)adsorption or (co)impregnation methods treated air nitrogen are investigated DSC, MS, IRS. A possible adsorption path Ru(NO)(NO 3 ) over its subsequent decomposition during catalyst conditioning discussed. Stabilization ruthenium presence platinum due formation bimetallic cluster was observed, especially when adsorption.
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