Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 184, Issue 12, Pages 3232-3239Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2011.09.035
Keywords
Cu-Ce-O mixed oxides; Layered double hydroxides; Catalytic oxidation; Cu-Ce interactions
Funding
- National Science Foundation of China
- 973 Program [2011BAC06B09]
- 111 Project [B07004]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars State Education Ministry
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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 N-2 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. (C) 2011 Elsevier Inc. All rights reserved.
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