کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
54084 46996 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Preparation and characterization of Pd loaded Sr-deficient K2NiF4-type (La, Sr)2MnO4 catalysts for NO–CO reaction
چکیده انگلیسی


• Pd was deposited on La0.2Sr1.8MnO4 by liquid-phase adsorption processes and calcined at 800 °C.
• XAS studies revealed that highly dispersed PdO nanoparticles were supported on the La0.2Sr1.8MnO4 the support.
• The Pd/La0.2Sr1.8MnO4 catalyst prepared by the liquid-phase adsorption process exhibited higher catalytic activity for NO–CO reaction than that prepared by the impregnation method.

Pd-loaded K2NiF4-type perovskite oxides, Pd/La0.2Sr1.8−xMnO4 were prepared by liquid-phase adsorption process, and their structural and catalytic properties were investigated. Pd deposition was carried out by mixing La0.2Sr1.8MnO4 with Pd(NO3)2 in aqueous solution, followed by filtration, drying, and calcination at 800 °C. During the Pd deposition process, 5% of Sr in La0.2Sr1.8MnO4 oxides was dissolved into the aqueous phase, whereas the perovskite structure retained. The content of Pd loaded on La0.2Sr1.8MnO4 was 0.24 wt%. X-ray absorption spectroscopy studies showed that highly dispersed PdO nanoparticles were supported on Pd/La0.2Sr1.8MnO4 prepared by the liquid-phase adsorption process, whereas aggregated PdO particles were formed on Pd/La0.2Sr1.8MnO4 prepared by an impregnation method. The Pd/La0.2Sr1.8MnO4 catalyst prepared by the liquid-phase adsorption process exhibited higher catalytic activity for NO–CO reaction than the 0.24 wt% Pd/La0.2Sr1.8MnO4 catalyst prepared by the impregnation method.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 251, 1 August 2015, Pages 7–13
نویسندگان
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