Effect of NO₂ and water on the catalytic oxidation of soot

详细信息    查看全文

• 作者：Jakob M. Christensen^a ; ^{jmc@kt.dtu.dk} ; Jan-Dierk Grunwaldt^a ; ^b ; Anker D. Jensen^a
• 关键词：Soot oxidation ; Nitrogen dioxide ; Mars van Krevelen mechanism ; Volcano curve ; Spillover
• 刊名：Applied Catalysis B: Environmental
• 出版年：2017
• 出版时间：15 May 2017
• 年：2017
• 卷：205
• 期：Complete
• 页码：182-188
• 全文大小：753 K
• 卷排序：205

文摘

Oxidation of soot in loose contact with a catalyst is significantly enhanced by NO2. Loose contact oxidation by NO2 has a volcano-type dependence on bond strength of oxygen on the surface. Addition of NO2 and loose contact with FeCr2Ox shifts oxidation down by ≥200 °C. For soot in tight contact with a Co3O4 catalyst hardly any effect of NO2. Limited effect on oxidation in tight contact consistent with Mars van Krevelen mechanism.