کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51765 | 46853 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of highly dispersed active sites of Cu/TiO2 catalyst on CO oxidation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The oxidation of CO over Cu/TiO2 catalysts containing different Cu loadings was investigated. The activities of the Cu/TiO2 catalysts were observed to be nearly constant for Cu contents between 3.7 wt% and 10.3 wt%. The characterization of the Cu/TiO2 catalysts by H2 temperature-programmed reduction (TPR) suggested the presence of different CuO species with distinct catalytic activities, that is, isolated Cu atoms, highly dispersed CuO, and bulk CuO. The concentration of reducible Cu2+ species at low temperatures (437 K) was observed to be independent of Cu content and Cu atom aggregation due to a 773 K treatment. These reduced Cu species are potentially responsible for the activities of Cu/TiO2 catalysts.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 9, Issue 14, 30 August 2008, Pages 2381–2385
Journal: Catalysis Communications - Volume 9, Issue 14, 30 August 2008, Pages 2381–2385
نویسندگان
Ching-Shiun Chen, Jiann-Hwa You, Jarrn-Horng Lin, Yu-Yuan Chen,