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Journal of Thermal Analysis and Calorimetry

, Volume 83, Issue 2, pp 451–455 | Cite as

Thermal decomposition of the [Pt(NH3)4]2+ complex in nax zeolite: effect of calcination procedure

  • Camacho Rodrigues A C 
  • Fontes Monteiro J L 
Article

Abstract

The effect of the calcination procedure on the decomposition of the [Pt(NH3)4]2+ complex in a NaX zeolite was studied by mass spectrometry (MS-TPDE) and diffuse reflectance spectroscopy (DRS). The decomposition of the complex took place in two steps. In the first step, under oxygen, the [Pt(NH3)4]2+ complex was first converted to [Pt(NH3)2]2+ complex, accompanied by nitrogen release. In the second step, corresponding to the decomposition of the remaining two amine ligands, NO formation was also observed. Under He, the decomposition also occurred in two steps with H2 liberation. A reaction scheme was proposed for these results.

Keywords

mass spectrometry  nitrogen oxide platinum thermal decomposition  zeolite X 

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Camacho Rodrigues A C 
    • 1
  • Fontes Monteiro J L 
    • 1
  1. 1.NUCAT/PEQ/COPPE/UFRJ, Universidade Federal do Rio de Janeiro, Ilha do FundãoRio de JaneiroBrazil

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