کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
62549 | 47644 | 2008 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Surface properties of Sr- and Co-doped LaFeO3
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Surface properties of Sr- and Co-doped LaFeO3 Surface properties of Sr- and Co-doped LaFeO3](/preview/png/62549.png)
چکیده انگلیسی
The surface properties of Fe-based perovskite-type oxides with the formula La0.6Sr0.4CoyFe1−yO3−δ for y=0.1y=0.1, 0.2, and 0.3 were investigated. Using methanol as a probe molecule, the amounts of basic and Lewis surface sites were determined. The types of sites were confirmed using DRIFTS. The surface basicity, as well as the reducibility, oxygen storage capacity, transition metal surface concentration, and methanol oxidation activity, were found to progress through an extrema for the intermediate Co level; that is, the behavior and performance of the samples are nonlinear with respect to increasing Co content. An electronic structural transition is proposed as the explanation for the observed trends.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 253, Issue 1, 1 January 2008, Pages 200–211
Journal: Journal of Catalysis - Volume 253, Issue 1, 1 January 2008, Pages 200–211
نویسندگان
John N. Kuhn, Umit S. Ozkan,