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A hollow structure WO3@CeO2 catalyst for NH3-SCR of NOx
Catalysis Communications ( IF 3.4 ) Pub Date : 2020-11-23 , DOI: 10.1016/j.catcom.2020.106252
Xiaoping Chen , Qi Liu , Qin Wu , Zekun Luo , Weitao Zhao , Jianjun Chen , Junhua Li

Constructing a hollow structured Ce-based catalyst is an effective way to result in an efficient catalytic system for the selective catalytic reduction of NOx using NH3 (NH3-SCR). A WO3@CeO2 catalyst with hollow structure was successfully developed using carbon sphere as hard template, and tested for the NH3-SCR of NOx reaction. The obtained WO3@CeO2 catalyst with hollow structure exhibit higher NOx conversion (88%) than traditional WO3-CeO2 catalyst (40%) at 200 °C, and superior SO2 and H2O tolerance at 300 °C, given its high specific surface area, reducible W species, increased specific amount of chemisorbed oxygen species and acid sites.



中文翻译:

一种中空结构WO 3 @CeO 2催化剂,用于NO x的NH 3 -SCR

构建中空结构的基于Ce的催化剂是导致用于选择性催化还原NO的有效的催化系统的有效方法X使用NH 3(NH 3 -SCR)。以碳球为硬模板成功开发了中空结构的WO 3 @CeO 2催化剂,并测试了NO x反应的NH 3 -SCR 。所获得的具有空心结构的WO 3 @CeO 2催化剂在200°C下比传统的WO 3 -CeO 2催化剂(40%)具有更高的NO x转化率(88%),并且具有优异的SO 2和H 2鉴于其较高的比表面积,可还原的W物种,化学吸附的氧物种和酸部位的比量增加,在300°C时的O耐受性。

更新日期:2020-12-09
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