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  • Dahlin, SandraKTH,Kemiteknik,Process Technology,Department of Chemical Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH) (författare)

Chemical aging of Cu-SSZ-13 SCR catalysts for heavy-duty vehicles –Influence of sulfur dioxide

  • Artikel/kapitelEngelska2018

Förlag, utgivningsår, omfång ...

  • Amsterdam :Elsevier,2018
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-259737
  • https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259737URI
  • https://doi.org/10.1016/j.cattod.2018.01.035DOI
  • https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-98384URI
  • https://research.chalmers.se/publication/506247URI
  • https://research.chalmers.se/publication/505958URI
  • https://research.chalmers.se/publication/500824URI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • QC 20191011
  • Godkänd;2023;Nivå 0;2023-06-15 (hanlid);Funder: Scania CV AB; Volvo Group Trucks Technology; Haldor TopsØe A/S
  • Selective catalytic reduction of nitrogen oxides is an efficient technique for emission abatement in heavy-dutyvehicles. Cu-SSZ-13 SCR catalysts are more active than vanadium-based catalysts at low temperatures, but aremore sensitive to deactivation by sulfur. Consequently, there is a need to study poisoning by sulfur for thiscatalyst material. This experimental investigation focuses on the effect of sulfur on the low-temperature per-formance of Cu-SSZ-13 SCR catalysts. The effect of sulfur exposure temperature, and the influence of the NO 2 /NO x ratio, are considered and two different regeneration temperatures are compared. In addition, catalystsamples from an engine-aged catalyst are evaluated. The SO 2 exposure temperature is shown to have an im-portant impact on the deactivation of the Cu-SSZ-13 catalyst. The lowest sulfur exposure temperature (220 °C)results in the most severe deactivation, while the highest temperature during sulfur exposure (400 °C) results inthe lowest degree of deactivation. This was found to be related to the amount of sulfur on the catalyst.Additionally, SO 2 exposure was shown to decrease the N 2 O selectivity. The engine-aged catalyst has a decreasedperformance in terms of both decreased activity and increased N 2 O selectivity. For this catalyst, impurities fromfuel and engine-oil can play a role in the deactivation. Different deactivation mechanisms are seen for the lab-and engine-aged catalysts.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Lantto, CorneliaLuleå tekniska universitet,Kemiteknik,Scania CV AB, 151 87 Södertälje, Sweden,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)(Swepub:ltu)corlan-9 (författare)
  • Englund, Johanna,1988Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)johancar (författare)
  • Westerberg, BjörnScania CV AB, 151 87 Södertälje, Sweden (författare)
  • Regali, FrancescoScania CV AB, 151 87 Södertälje, Sweden (författare)
  • Skoglundh, Magnus,1965Competence Centre for Catalysis, Chalmers University of Technology, 412 96 Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)skoglund (författare)
  • Pettersson, LarsKTH,Kemiteknik,Process Technology,Department of Chemical Engineering, KTH Royal Institute of Technology, 100 44 Stockholm, Sweden,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)(Swepub:kth)u1kcgmtv (författare)
  • KTHKemiteknik (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Catalysis TodayAmsterdam : Elsevier320, s. 72-830920-58611873-4308

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