Low-Temperature Selective Catalytic Reduction of NO with NH3 over Fe–Ce–Ox Catalysts

被引：6
作者：
Sun Y. [1 ]
Guo Y. [1 ]
Su W. [2 ]
Wei Y. [1 ]
机构：
[1] School of Sciences, Tianjin University, Tianjin
[2] School of Chemical Engineering and Technology, Tianjin University, Tianjin
来源：
Transactions of Tianjin University | 2017年 / 23卷 / 01期
关键词：
Fe/Ce molar ratio; Fe–Ce–O[!sub]x[!/sub; Gas hourly space velocity; Low-temperature selective catalytic reduction; SO[!sub]2[!/sub]/H[!sub]2[!/sub]O resistance; Stability;
D O I：
10.1007/s12209-016-0017-y
中图分类号：
学科分类号：
摘要：
In this study, we used a simple impregnation method to prepare Fe–Ce–Ox catalysts and tested them regarding their low-temperature (200–300 °C) selective catalytic reduction (SCR) of NO using NH3. We investigated the effects of Fe/Ce molar ratio, the gas hourly space velocity (GHSV), the stability and SO2/H2O resistance of the catalysts. The results showed that the FeCe(1:6)Ox (Ce/Fe molar ratio is 1:6) catalyst, which has some ordered parallel channels, exhibited good SCR performance. The FeCe(1:6)Ox catalyst had the highest NO conversion with an activity of 94–99% at temperatures between 200 and 300 °C at a space velocity of 28,800 h−1. The NO conversion for the FeCe(1:6)Ox catalyst also reached 80–98% between 200 and 300 °C at a space velocity of 204,000 h−1. In addition, the FeCe(1:6)Ox catalyst demonstrated good stability in a 10-h SCR reaction at 200–300 °C. Even in the presence of SO2 and H2O, the FeCe(1:6)Ox catalyst exhibited good SCR performance. © 2016, Tianjin University and Springer-Verlag Berlin Heidelberg.
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页码：35 / 42
页数：7
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