Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation
| العنوان: | Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation |
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| المؤلفون: | Lars J. Pettersson, Lennart Andersson, Andreas Schaefer, Kunpeng Xie, Sandra Dahlin, Johanna Englund, Soran Shwan, Per-Anders Carlsson, Magnus Skoglundh |
| المصدر: | Catalysts Volume 10 Issue 5 Catalysts, Vol 10, Iss 552, p 552 (2020) |
| بيانات النشر: | Multidisciplinary Digital Publishing Institute, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Diesel particulate filter, catalyst deactivation, methane, Inorganic chemistry, Vanadium, chemistry.chemical_element, Selective catalytic reduction, lcsh:Chemical technology, Combustion, Catalysis, engine-bench, lcsh:Chemistry, lcsh:QD1-999, Biogas, chemistry, Catalytic oxidation, V2O5-WO3/TiO2, biogas, lcsh:TP1-1185, Physical and Theoretical Chemistry, NH3-SCR, NOx |
| الوصف: | We have investigated how the exhaust gases from a heavy-duty Euro VI engine, powered with biogas impact a vanadium-based selective catalytic reduction (SCR) catalyst in terms of performance. A full Euro VI emission control system was used and the accumulation of catalyst poisons from the combustion was investigated for the up-stream particulate filter as well as the SCR catalyst. The NO x reduction performance in terms of standard, fast and NO 2 -rich SCR was evaluated before and after exposure to exhaust from a biogas-powered engine for 900 h. The SCR catalyst retains a significant part of its activity towards NO x reduction after exposure to biogas exhaust, likely due to capture of catalyst poisons on the up-stream components where the deactivation of the oxidation catalyst is especially profound. At lower temperatures some deactivation of the first part of the SCR catalyst was observed which could be explained by a considerably higher surface V 4 + /V 5 + ratio for this sample compared to the other samples. The higher value indicates that the reoxidation of V 4 + to V 5 + is partially hindered, blocking the redox cycle for parts of the active sites. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2073-4344 |
| DOI: | 10.3390/catal10050552 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce53e7fb21a3b604b6fcd0dc5eb08216 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....ce53e7fb21a3b604b6fcd0dc5eb08216 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20734344 |
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| DOI: | 10.3390/catal10050552 |