کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1330531 978961 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cu–Ce–O mixed oxides from Ce-containing layered double hydroxide precursors: Controllable preparation and catalytic performance
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Cu–Ce–O mixed oxides from Ce-containing layered double hydroxide precursors: Controllable preparation and catalytic performance
چکیده انگلیسی

Cu/Zn/Al layered double hydroxide (LDH) precursors have been synthesized using an anion exchange method with anionic Ce complexes containing the dipicolinate (pyridine-2,6-dicarboxylate) ligand. Cu–Ce–O mixed oxides were obtained by calcination of the Ce-containing LDHs. The materials were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetry–differential thermal analysis, elemental analysis, and low temperature N2 adsorption/desorption measurements. The results reveal that the inclusion of Ce has a significant effect on the specific surface area, pore structure, and chemical state of Cu in the resulting Cu–Ce–O mixed metal oxides. The resulting changes in composition and structure, particularly the interactions between Cu and Ce centers, significantly enhance the activity of the Ce-containing materials as catalysts for the oxidation of phenol by hydrogen peroxide.

Graphical AbstractCu–Ce–O mixed oxides calcined from [Ce(dipic)3]3−- intercalated Cu/Zn/Al layered double hydroxides were synthesized and displayed good catalytic performances in phenol oxidation due to the Cu–Ce interactions.Figure optionsDownload as PowerPoint slideHighlights
► [Ce(dipic)3]3−-intercalated Cu/Zn/Al layered double hydroxides were synthesized.
► Cu–Ce–O mixed oxides derivated from the LDHs were characterized as catalysts.
► Presence of Ce influenced physicochemical property and catalytic performance.
► Cu–Ce interaction was largely responsible for enhanced catalytic ability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 184, Issue 12, December 2011, Pages 3232–3239
نویسندگان
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