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Effect of biofuel- ...
Effect of biofuel- and lube oil-originated sulfur and phosphorus on the performance of Cu-SSZ-13 and V2O5-WO3/TiO2 SCR catalysts
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- Dahlin, Sandra (författare)
- KTH,Processteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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- Englund, Johanna, 1988 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Malm, H. (författare)
- Umicore SA
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- Feigel, M. (författare)
- Technische Universität München (TUM),Technical University of Munich (TUM)
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- Westerberg, B. (författare)
- Scania CV AB
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- Regali, F. (författare)
- Scania CV AB
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- Skoglundh, Magnus, 1965 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Pettersson, Lars (författare)
- KTH,Kemiteknik,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)
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(creator_code:org_t)
- Elsevier B.V. 2021
- 2021
- Engelska.
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Ingår i: Catalysis Today. - : Elsevier B.V.. - 0920-5861 .- 1873-4308. ; 360, s. 326-339
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://research.cha... (primary) (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Two different SCR catalysts, V2O5-WO3/TiO2 and Cu-SSZ-13, were exposed to biodiesel exhausts generated by a diesel burner. The effect of phosphorus and sulfur on the SCR performance of these catalysts was investigated by doping the fuel with P-, S-, or P + S-containing compounds. Elemental analyses showed that both catalysts captured phosphorus while only Cu-SSZ-13 captured sulfur. High molar P/V ratios, up to almost 3, were observed for V2O5-WO3/TiO2, while the highest P/Cu ratios observed were slightly above 1 for the Cu-SSZ-13 catalyst. Although the V2O5-WO3/TiO2 catalyst captured more P than did the Cu-SSZ-13 catalyst, a higher degree of deactivation was observed for the latter, especially at low temperatures. For both catalysts, phosphorus exposure resulted in suppression of the SCR performance over the entire temperature range. Sulfur exposure, on the other hand, resulted in deactivation of the Cu-SSZ-13 catalyst mainly at temperatures below 300-350 °C. The use of an oxidation catalyst upstream of the SCR catalyst during the exhaust-exposure protects the SCR catalyst from phosphorus poisoning by capturing phosphorus. The results in this work will improve the understanding of chemical deactivation of SCR catalysts and aid in developing durable aftertreatment systems.
Ämnesord
- 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)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Annan kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Other Chemical Engineering (hsv//eng)
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Nyckelord
- biodiesel exhaust
- Cu-SSZ-13
- NH3-SCR
- phosphorus
- sulfur
- V2O5-WO3/TiO2
- Ammonia
- Biodiesel
- Catalyst poisoning
- Molar ratio
- Tungsten compounds
- Vanadium pentoxide
- Aftertreatment systems
- Chemical deactivation
- Low temperatures
- Oxidation catalysts
- SCR catalysts
- Temperature range
- WO3/TiO2
- WO3/TiO2 catalyst
- Catalyst deactivation
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