Is selective hydrogenation of molecular oxygen to H2O2 affected by strong metal–support interactions on Pd/TiO2 catalysts? A case study using commercially available TiO2

Stefano Sterchele, Marco Bortolus, Pierdomenico Biasi, Dan Boström, Jyri-Pekka Mikkola, Tapio Salmi

Tutkimustuotos: LehtiartikkeliArtikkeliTieteellinenvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

In this study, titania-supported Pd catalysts were prepared and their performance evaluated upon H2O2 direct synthesis. Typically, the materials contained different ratios of anatase and rutile phases, which gave rise to different surface properties of the supports, e.g., surface area, number of Lewis acidic and basic sites as well as different compositions of the phases, i.e. the amount of anatase phase and crystallite size. Two materials, Pd-A98 and Pd-A05 samples, respectively, apparently hint the existence of the so-called SMSI (strong metal–support interaction) phenomenon giving rise to 1080 and 683 molH2O2·molPd−1·h−1 of H2O2 productivity and 22 and 14% of H2O2 selectivity, respectively. However, the best material, Pd-A82, gave rise to 949 molH2O2·molPd−1·h−1 of H2O2 productivity and 26% of H2O2 selectivity.
AlkuperäiskieliEi tiedossa
Sivut1011–1020
JulkaisuComptes Rendus Chimie
Vuosikerta19
Numero8
DOI - pysyväislinkit
TilaJulkaistu - 2016
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Keywords

  • engineering education
  • Anatase
  • Direct synthesis of hydrogen peroxide
  • SMSI (strong metal support interaction)
  • Titanium dioxide
  • Palladium

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