Impact of PtO_x formation in diesel oxidation catalyst on NO₂ yield during driving cycles

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• 作者：Adé ; la Arvajová ; Petr Kočí ; ; ^{petr.koci@vscht.cz} ;
• 关键词：Catalyst ; Platinum oxide ; NO oxidation ; Mathematical modeling ; Automotive exhaust gas aftertreatment
• 刊名：Chemical Engineering Science
• 出版年：2017
• 出版时间：2 February 2017
• 年：2017
• 卷：158
• 期：Complete
• 页码：181-187
• 全文大小：4201 K
• 卷排序：158

文摘

Pt sites oxidation takes place in platinum-based diesel oxidation catalysts. NO oxidation rate gradually decreases with the growing PtOx coverage. NO2 formation was simulated over repeated driving cycles NEDC, FTP, SC03 and US06. NO2 yield decreases by 3–10% over one cycle compared to the reduced catalyst. Stabilized NO2 yield in driving cycles is 7–27% lower than with the reduced catalyst