Doped Keggin heteropolyacids as catalysts in sulfide oxidation

  • Valeria Palermo
  • Ángel G. Sathicq
  • Patricia G. Vázquez
  • Horacio J. Thomas
  • Gustavo P. Romanelli


In this research, we report the preparation of doped PMo Keggin heteropolyacids where Mo is partially replaced by V, Bi, and Bi–V. These catalysts were characterized by means of ICP-AES analysis, 31P-NMR, UV–visible spectra, FT-IR spectra, thermal analysis, and textural properties. In addition, the activities of the synthesized catalysts were evaluated in the selective oxidation of sulfides to sulfoxides/sulfones. The incorporation of V, Bi and Bi–V into the structure of H3PMo12O40 increases the catalytic activity. The two most active catalysts, those with V and V–Bi were supported on aminopropyl-functionalized silica (SiO2NH2) and they were found to be and efficient heterogeneous catalysts for the selective oxidation of diphenylsulfide to the corresponding sulfoxide/sulfone.


Doped Keggin heteropolyacids Sulfide oxidation Bulk and supported catalysts Sulfoxides Sulfones 



The authors thank E. Soto and D. Peña for their experimental contribution to the measurements of S BET and GC, respectively. The authors thank CONICET, ANPCyT and UNLP for their financial support. AGS, PGV, HJT and GPR are members of CONICET.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Valeria Palermo
    • 1
  • Ángel G. Sathicq
    • 1
  • Patricia G. Vázquez
    • 1
  • Horacio J. Thomas
    • 1
  • Gustavo P. Romanelli
    • 1
  1. 1.Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr. Jorge J. Ronco” (CINDECA), CCT-LaPlata-CONICET, Facultad de Ciencias ExactasUniversidad Nacional de La PlataLa PlataArgentina

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