Deactivation of a Pd/Pt Bimetallic Oxidation Catalyst Used in a Biogas-Powered Euro VI Heavy-Duty Engine Installation
| Autor: | Lars J. Pettersson, Johanna Englund, Magnus Skoglundh, Dazheng Jing, Per-Anders Carlsson, Lennart Andersson, Soran Shwan, Kunpeng Xie, Andreas Schaefer, Sandra Dahlin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
inorganic chemicals
catalyst deactivation methane chemistry.chemical_element engine bench oxidation catalyst Catalysis Methane chemistry.chemical_compound Biogas Catalytic oxidation chemistry emission control Environmental chemistry Anaerobic oxidation of methane biogas Physical and Theoretical Chemistry Platinum Syngas Palladium |
| Zdroj: | Catalysts Volume 9 Issue 12 |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal9121014 |
| Popis: | The reduction of anthropogenic greenhouse gas emissions is crucial to avoid further warming of the planet. We investigated how effluent gases from a biogas powered Euro VI heavy-duty engine impact the performance of a bimetallic (palladium and platinum) oxidation catalyst. Using synthetic gas mixtures, the oxidation of NO, CO, and CH4 before and after exposure to biogas exhaust for 900 h was studied. The catalyst lost most of its activity for methane oxidation, and the activity loss was most severe for the inlet part of the aged catalyst. Here, a clear sintering of Pt and Pd was observed, and higher concentrations of catalyst poisons such as sulfur and phosphorus were detected. The sintering and poisoning resulted in less available active sites and hence lower activity for methane oxidation. |
| Databáze: | OpenAIRE |
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