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Chemical aging of C...
Chemical aging of Cu-SSZ-13 SCR catalysts for heavy-duty vehicles –Influence of sulfur dioxide
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- Dahlin, Sandra (author)
- KTH,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)
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- Lantto, Cornelia (author)
- Luleå tekniska universitet,Kemiteknik,Scania CV AB, 151 87 Södertälje, Sweden,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)
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- Englund, Johanna, 1988 (author)
- Competence Centre for Catalysis, Chalmers University of Technology, Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Westerberg, Björn (author)
- Scania CV AB, 151 87 Södertälje, Sweden
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- Regali, Francesco (author)
- Scania CV AB, 151 87 Södertälje, Sweden
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- Skoglundh, Magnus, 1965 (author)
- Competence Centre for Catalysis, Chalmers University of Technology, 412 96 Gothenburg, Sweden,Chalmers tekniska högskola,Chalmers University of Technology
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- Pettersson, Lars (author)
- KTH,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)
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(creator_code:org_t)
- Amsterdam : Elsevier, 2018
- 2018
- English.
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In: Catalysis Today. - Amsterdam : Elsevier. - 0920-5861 .- 1873-4308. ; 320, s. 72-83
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://research.cha...
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https://research.cha...
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https://research.cha...
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Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Kemiska processer (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Chemical Process Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
Keyword
- NH3-SCR
- Cu-SSZ-13
- Cu-CHA
- chemical deactivation
- sulfur
- heavy-duty vehicles
- engine-aging
- Chemical Engineering
- Kemiteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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