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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Stefano Sterchele, Marco Bortolus, Pierdomenico Biasi, Dan Boström, Jyri-Pekka Mikkola, Tapio Salmi
Publiceringsår: 2016
Tidskrift: Comptes Rendus Chimie
Volym: 19
Nummer: 8
Artikelns första sida, sidnummer: 1011
Artikelns sista sida, sidnummer: 1020
eISSN: 1878-1543


Abstrakt

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.


Nyckelord

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

Senast uppdaterad 2019-14-12 vid 05:11