کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6502891 | 1418996 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Promotional effects of cerium modification of Cu-USY catalysts on the low-temperature activity of NH3-SCR
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A series of ceria-modified Cu-USY catalysts were prepared by a co-impregnation method and tested towards the selective reduction of NOx with NH3. A 5Cu-8Ce-USY catalyst with 8â¯wt% Ce content showed optimum low-temperature activity, and the widest NO conversion temperature window (160-410â¯Â°C) of operation, which these features are related to the enhanced redox ability and Cu+ species concentration in the sodalite cage compared to the Cu-USY catalyst. In addition, Lewis acid sites on the surface of Cu-Ce-USY catalysts were found to play a key role for its excellent SCR performance. The ceria-modified Cu-USY catalysts with enhanced low-temperature (120-170â¯Â°C) deNOx performance make them highly promising candidates for practical applications in controlling NOx emissions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 114, August 2018, Pages 60-64
Journal: Catalysis Communications - Volume 114, August 2018, Pages 60-64
نویسندگان
Jianmin Zhou, Chengwei Zhao, Jiansong Lin, Haipeng Yang, Renxian Zhou,