Mechanism-dependent on the different CeO₂ supports of phosphotungstic acid modification CeO₂ catalysts for the selective catalytic reduction of NO with NH₃

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• 作者：Zhongxian Song^a ; Qiulin Zhang^a ; ^{qiulinzhang_kmust@163.com} ; Yixing Ma^a ; Qixian Liu^a ; Ping Ning^a ; ^{ningping_58@126.com} ; Xin Liu^a ; Jing Wang^a ; Bin Zhao^a ; Jianhong Huang^a ; Zhenzhen Huang^b
• 关键词：Phosphotungstic acid ; Mechanism ; Oxidation ; Surface acidity
• 刊名：Journal of the Taiwan Institute of Chemical Engineers
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：71
• 期：Complete
• 页码：277-284
• 全文大小：3053 K
• 卷排序：71

文摘

Mechanism of phosphotungstic acid modification CeO2 (P-W/CeO2) was investigated. Effect of different CeO2 supports on the mechanism of P-W/CeO2 was explored. Langmuir–Hinshelwood mechanism and Eley–Rideal mechanism existed over P-W/CeO2. Bidentate nitrate reacted with NH4+ and formed the NO2, N2 and H2O over P-W/CeO2. NH3-adsorbed reacted with adsorbed NO2 and gaseous NO to generate N2 and H2O.