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  • L. Bergman, SusannaDepartment of Chemistry, Princeton University, Princeton, NJ, 08544, USA (author)

In-situ characterization by Near-Ambient Pressure XPS of the catalytically active phase of Pt/Al2O3 during NO and CO oxidation

  • Article/chapterEnglish2018

Publisher, publication year, extent ...

  • Amsterdam :Elsevier,2018
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:kth-282434
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-282434URI
  • https://doi.org/10.1016/j.apcatb.2017.08.047DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • QC 20200929
  • This study concerns near ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) studies of a Pt/Al2O3 diesel oxidation catalyst used in exhaust aftertreatment. We apply the technique to an industrial-grade porous catalyst, thus bridging both the pressure and materials gap, and probe the shift in binding energy of Pt 4d under different atmospheres. We observe that oxidizing atmospheres induce a shift in binding energy, corresponding to changes in Pt oxidation state, especially pronounced under an atmosphere of NO and O2. Such changes in Pt oxidation state have previously been linked to dynamic changes in NO oxidation activity.

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  • Granestrand, JonasKTH,Kemisk teknologi,Process Technology(Swepub:kth)u1mio3fb (author)
  • Tang, YuDepartment of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, KS, 66045, USA (author)
  • Suárez París, RodrigoMaterials Technology, Scania CV AB, Södertälje, SE-15187, Sweden (author)
  • Nilsson, MaritaCatalytic Converter and Particulate Filter Performance, Scania CV AB, Södertälje, SE-15187, Sweden (author)
  • Tao, Franklin FengDepartment of Chemical and Petroleum Engineering and Department of Chemistry, University of Kansas, Lawrence, KS, 66045, USA (author)
  • Tang, ChunhuaDepartment of Materials Science and Engineering, National University of Singapore, 117608, Singapore (author)
  • Pennycook, Stephen J.Department of Materials Science and Engineering, National University of Singapore, 117608, Singapore (author)
  • Pettersson, LarsKTH,Processteknologi(Swepub:kth)u1kcgmtv (author)
  • Bernasek, Steven L. (author)
  • Department of Chemistry, Princeton University, Princeton, NJ, 08544, USAKemisk teknologi (creator_code:org_t)

Related titles

  • In:Applied Catalysis BAmsterdam : Elsevier220, s. 506-5110926-33731873-3883

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