کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5363432 | 1388301 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tin-Platinum catalysts interactions on titania and silica
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Pt-Sn was supported on titania and silica, and the resulting interactions between the components in prepared samples and the resulting interactions between the components before and after treatment with hydrogen were characterized by Mössbauer spectroscopy, X-ray diffraction, Rietveld refinement, high-resolution transmission electron microscopy (HRTEM) and catalytic tests data. Results show the presence of Pt and SnO2 after calcinations, and Pt3Sn, PtSn and PtSn3 after reduction. Rietveld analysis shows that some Ti4+ are replaced by Sn4+ atoms in the titania structure. Finally, HRTEM and the practically absence of activity observed confirms that metallic platinum is encapsulated.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 23, 30 September 2007, Pages 9215-9220
Journal: Applied Surface Science - Volume 253, Issue 23, 30 September 2007, Pages 9215-9220
نویسندگان
N. Nava, P. Del Angel, J. Salmones, E. Baggio-Saitovitch, P. Santiago,