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Article

Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation

1
Competence Centre for Catalysis, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden
2
Department of Chemical Engineering, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden
3
Volvo Group Trucks Technology, 412 58 Gothenburg, Sweden
*
Author to whom correspondence should be addressed.
Catalysts 2020, 10(5), 552; https://doi.org/10.3390/catal10050552
Submission received: 21 April 2020 / Revised: 12 May 2020 / Accepted: 14 May 2020 / Published: 16 May 2020

Abstract

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 NOx reduction performance in terms of standard, fast and NO2-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 NOx 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 V4+/V5+ ratio for this sample compared to the other samples. The higher value indicates that the reoxidation of V4+ to V5+ is partially hindered, blocking the redox cycle for parts of the active sites.
Keywords: NH3-SCR; V2O5-WO3/TiO2; catalyst deactivation; biogas; methane; engine-bench NH3-SCR; V2O5-WO3/TiO2; catalyst deactivation; biogas; methane; engine-bench

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MDPI and ACS Style

Englund, J.; Dahlin, S.; Schaefer, A.; Xie, K.; Andersson, L.; Shwan, S.; Carlsson, P.-A.; Pettersson, L.J.; Skoglundh, M. Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation. Catalysts 2020, 10, 552. https://doi.org/10.3390/catal10050552

AMA Style

Englund J, Dahlin S, Schaefer A, Xie K, Andersson L, Shwan S, Carlsson P-A, Pettersson LJ, Skoglundh M. Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation. Catalysts. 2020; 10(5):552. https://doi.org/10.3390/catal10050552

Chicago/Turabian Style

Englund, Johanna, Sandra Dahlin, Andreas Schaefer, Kunpeng Xie, Lennart Andersson, Soran Shwan, Per-Anders Carlsson, Lars J. Pettersson, and Magnus Skoglundh. 2020. "Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation" Catalysts 10, no. 5: 552. https://doi.org/10.3390/catal10050552

APA Style

Englund, J., Dahlin, S., Schaefer, A., Xie, K., Andersson, L., Shwan, S., Carlsson, P.-A., Pettersson, L. J., & Skoglundh, M. (2020). Deactivation of a Vanadium-Based SCR Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation. Catalysts, 10(5), 552. https://doi.org/10.3390/catal10050552

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