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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
Umeå University, Faculty of Science and Technology, Department of Chemistry. Department of Chemical Engineering, Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, 20500 Åbo-Turku, Finland.
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
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2016 (English)In: Comptes rendus. Chimie, ISSN 1631-0748, E-ISSN 1878-1543, Vol. 19, no 8, 1011-1020 p.Article in journal (Refereed) Published
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Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 19, no 8, 1011-1020 p.
Keyword [en]
Palladium, Direct synthesis of hydrogen peroxide, Titanium dioxide, Anatase, SMSI (strong metal–support interaction)
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-124431DOI: 10.1016/j.crci.2016.05.012ISI: 000385991200015OAI: oai:DiVA.org:umu-124431DiVA: diva2:951936
Available from: 2016-08-11 Created: 2016-08-11 Last updated: 2016-12-12Bibliographically approved

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Biasi, PierdomenicoBoström, DanMikkola, Jyri-Pekka
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Department of ChemistryDepartment of Applied Physics and Electronics
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Comptes rendus. Chimie
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CiteExportLink to record
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