Assessment of the Location of Pt Nanoparticles in Pt/zeolite Y/γ-Al₂O₃ Composite Catalysts.

ABSTRACT: The location of Pt nanoparticles was studied in Pt/zeolite Y/γ-Al₂O₃ composite catalysts prepared by H₂PtCl₆ ⋅ 6H₂O (CPA) or Pt(NH₃)₄(NO₃)₂ (PTA) as Pt precursors. The aim of this study is to validate findings from Transmission Electron Microscopy (TEM) by using characterization techniques that sample larger amounts of catalyst per measurement. Quantitative X-ray Photoelectron Spectroscopy (XPS) showed that the catalyst prepared with CPA led to a significantly higher Pt/Al atomic ratio than the catalyst prepared with PTA confirming that the 1-2 nm sized Pt nanoparticles in the former catalyst were located on the open and mesoporous γ-Al₂O₃ component, whereas they were lo

SUBMITTER: Oenema J 

PROVIDER: S-EPMC7006758 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature