کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9567262 | 1503711 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of CeO2 addition on the structure and activity of RuO2/γ-Al2O3 catalyst
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
RuO2/γ-Al2O3 and RuO2-CeO2/γ-Al2O3 catalysts, prepared by impregnation of γ-Al2O3 with aqueous solution containing Ru and Ce were used to study the influence of CeO2 on the structure and activity of RuO2/γ-Al2O3 catalyst in catalytic wet air oxidation (CWAO) of phenol. The surface properties of two catalysts were measured by BET, SEM, XRD and XPS. Slight aggregates of Ru particles were observed on the surface of RuO2/γ-Al2O3 catalyst, while a better dispersion of Ru particles was detected in the presence of CeO2 on the surface of RuO2/γ-Al2O3 catalyst. The chemical state of Ru and O was investigated. The results show that the addition of CeO2 affects the chemical state of Ru and O elements and promotes the increase of the chemisorbed oxygen contents on the catalyst surface. Moreover, the removal of phenol with RuO2-CeO2/γ-Al2O3 catalyst is more complete than with RuO2/γ-Al2O3 catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 246, Issues 1â3, 15 June 2005, Pages 222-228
Journal: Applied Surface Science - Volume 246, Issues 1â3, 15 June 2005, Pages 222-228
نویسندگان
Shaoxia Yang, Yujie Feng, Jiafeng Wan, Wanpeng Zhu, Zhanpeng Jiang,