頁籤選單縮合
題名 | Deactivation of Ce-Ti Oxide Catalyst by K₃PO₄ for the Selective Catalytic Reduction of NO with NH₃ |
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作者姓名(外文) | Jiang, Ye; Lai, Chengzhen; Liu, Shaojun; Liang, Guitao; Bao, Changzhong; Shi, Weiyun; Ma, Shiyuan; | 書刊名 | Aerosol and Air Quality Research |
卷期 | 19:2 2019.02[民108.02] |
頁次 | 頁422-430 |
分類號 | 445.63 |
關鍵詞 | Selective catalytic reduction; NO; NH₃; K₃PO₄; Ce-Ti oxide; Activity; |
語文 | 英文(English) |
英文摘要 | The effect of K3PO4 on the selective catalytic reduction of NO with NH3 over a Ce-Ti oxide catalyst was investigated using XRD, BET, XPS, NH3-TPD, H2-TPR and activity measurements. The results showed that K3PO4 deactivated the Ce-Ti oxide catalyst seriously. The drop in the amount of Ce3+ was accompanied by a decrease in oxygen vacancies and active surface oxygen species, which was disadvantageous to the SCR reaction over the Ce-Ti oxide catalyst. In addition, a reduction in the Brønsted surface acidity and reducibility was also responsible for the deactivation of the Ce-Ti oxide catalyst by K3PO4. |
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