Pd/H-Beta catalysts: Characterization and reactivity in piperonyl alcohol selective oxidation

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Abstract

Pd/H-Beta catalysts with different silica-to-alumina ratio prepared by an impregnation method have been studied by XANES/EXAFS, IR, XRD and TEM. It was shown that palladium in calcined Pd/H-Beta samples exists as palladium oxide that can be easily reduced to Pd metal. The catalysts were tested in selective oxidation of piperonyl alcohol to piperonylaldehyde at 80 °C. The Pd/H-Beta zeolite catalysts with the lowest silica-to-alumina ratio possess the highest catalytic activity in benzylic alcohol oxidation reaction.

Original languageEnglish
Pages (from-to)144-150
Number of pages7
JournalApplied Catalysis A: General
Volume359
Issue number1-2
DOIs
Publication statusPublished - 15 May 2009
MoE publication typeA1 Journal article-refereed

Funding

This work is part of the activities at the Åbo Akademi Process Chemistry Centre within the Finnish Centre of Excellence Programme (2000–2011) by the Academy of Finland. Financial support from European Union through the Sixth Framework Program is gratefully acknowledged. Authors thank HASYLAB (DESY, Germany) for X-ray beam time (project I-20060224 EC).

Keywords

  • IR
  • Pd/H-Beta zeolites
  • Piperonyl alcohol oxidation
  • TEM
  • XAS

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