کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4756420 1419011 2017 4 صفحه PDF سفارش دهید دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of support (Degussa P25 TiO2, anatase TiO2, γ-Al2O3, and AlOOH) of Pt-based catalysts on the formaldehyde oxidation at room temperature
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موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Effect of support (Degussa P25 TiO2, anatase TiO2, γ-Al2O3, and AlOOH) of Pt-based catalysts on the formaldehyde oxidation at room temperature
چکیده انگلیسی
Different catalyst supports, namely: commercial Degussa P25 TiO2, anatase TiO2 (CC), γ-Al2O3, and lab-synthesized AlOOH were used to prepare Pt-based catalysts for the room temperature formaldehyde oxidation. XRD, BET and XPS were conducted to characterize the bulk structure of support, the oxidation state of surface elements and the ratio of oxygen in hydroxyls to the total surface oxygen, as well as textural properties of catalysts. For the first time, a long-term activity test at 0% relative humidity was conducted to investigate relationships between the activity of the Pt-based catalysts with Pt dispersion and oxidation state and the relative abundance of surface OH groups. Pt/AlOOH showed the best activity, whereas Pt/P25 TiO2 gave the worst activity. We consider that both the surface hydroxyl groups and the Pt dispersion are indispensable, and both act synergistically. The specific surface area is not the decisive factor for the present reaction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 99, August 2017, Pages 39-42
نویسندگان
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